At baseline, 1,305 (40.7%) of 3,210 eligible respondents reported hip or knee pain. At 1 year, 1,072 (82.1%) of 1,305 individuals responded, of whom 820 (76.5%) remained symptomatic (the persistent group). In multivariate analysis, baseline factors identified as strongly related to having persistent pain were maximum Lequesne score (odds ratio [OR] 1.09, P , 0.001), maximum hip/knee pain score (OR 1.61, P , 0.001), and number of painful hip and knee joints at baseline (OR 1.48, P = 0.004). Following adjustment for age, sex, and baseline score, differences in mean SF-36 change scores of the 2 groups were significant for all dimensions except for mental health. ...
In a previous study we showed that female smokers have about a 50% higher relative risk of dying from vascular disease.5 The present study confirmed this sex difference and found that the difference is not affected by adjustment for other cardiovascular risk factors.. Our analyses were based on baseline smoking status. If substantially more men than women gave up smoking during follow up, this could explain some of the observed difference. In 11 094 subjects in the Copenhagen city heart study who were re-examined after 5 years, 12.8% of men and 11.6% of women who smoked at baseline had given up smoking. As quitting rates were similar, this is not likely to have affected results.. A few studies have addressed the issue of sex difference in effect of smoking on ischaemic heart disease. 4 8-12 In a large prospective Norwegian study that included 11 843 subjects, relative risk of myocardial infarction was 3.3 in female current smokers and 1.9 in male current smokers after adjustment for total and ...
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Longitudinal effects of muscular hypertrophy allele on milk production traits during the lactation using a novel equivalent model when molecular information is ...
The association between hip bone marrow lesions and bone mineral density: a cross-sectional and longitudinal population-based study
Aging is typically associated with declining mental abilities, most prominent for some forms of memory. There are, however, large inter-individual differences within the older population. Some people experience rapid decline whereas others seem almost spared from any adverse effects of aging. This thesis examined the neural underpinnings of such individual differences by using longitudinal observations of episodic memory change across 15-20 years, combined with structural and functional magnetic resonance imaging of the brain. Study I found significant correlations between volume and activity of the hippocampus (HC), and memory change over a 6-year period. That is, individuals with decline in HC function also had declining memory. In contrast, Study II showed that successfully aged individuals, who maintained high memory scores over 15-20 years, had preserved HC function compared to age-matched elderly with average memory change. The successful agers had HC activity levels comparable to those of ...
UK Data Service data catalogue record for Impact of Dependent Interviewing on Interview Dynamics: Implications for Longitudinal Study Design, 2006.
Launched in fall 2013, CLA+ is designed to assess the skills most critical for success beyond college. Its high school counterpart, CWRA+, measures identical skills that are critical for success in college. CLA+ and CWRA+ provide reliable measures of students ability to solve complex problems by analyzing and synthesizing disparate pieces of information while presenting cohesive, persuasive, and grammatically correct solutions.. Given that the skills measured by CLA+-Analysis and Problem Solving, Writing Effectiveness, Writing Mechanics, Scientific and Quantitative Reasoning, Critical Reading and Evaluation, and Critique an Argument (detecting logical flaws and questionable assumptions)-are skills that are widely valued especially by employers, CAE is undertaking longitudinal studies to examine the relationship between individuals performance on CLA+ and their post-collegiate outcomes.. The CLA+ and CWRA+ longitudinal outcomes survey project began with a year-long feasibility study, starting ...
Loewenstein, D.A., Greig, M.T., Schinka, J.A., et al. (2012) An investigation of PreMCI Subtypes and longitudinal outcomes. Alzheimers & Dementia, 8, 172-179.
BACKGROUND: Schizophrenia has a neurodevelopmental component to its origin, and may share overlapping pathogenic mechanisms with childhood neurodevelopmental disorders (NDs). Nevertheless, longitudinal studies of psychotic outcomes among individuals with NDs are limited. We report a population-based prospective study of six common childhood NDs, subsequent neurocognitive performance and the risk of psychotic experiences (PEs) in early adolescence. METHOD: PEs were assessed by semi-structured interviews at age 13 years. IQ and working memory were measured between ages 9 and 11 years. The presence of six NDs (autism spectrum, dyslexia, dyspraxia, dysgraphia, dysorthographia, dyscalculia) was determined from parent-completed questionnaires at age 9 years. Linear regression calculated the mean difference in cognitive scores between children with and without NDs. Associations between NDs and PEs were expressed as odds ratios (ORs) with 95% confidence intervals (CIs); effects of cognitive deficits ...
BACKGROUND: In several longitudinal studies changes in body mass and in forced expiratory volume in one second (FEV1) have been found to be negatively correlated. This paper tests the hypothesis that failure to allow for the association can lead to error in the interpretation of longitudinal measurements of ventilatory capacity. METHODS: Male shipyard workers (n = 1005) were assessed on two occasions with an average interval between measurements of 6.9 years. A respiratory symptoms questionnaire, detailed anthropometric measurements, and dynamic spirometric tests were undertaken. Multiple regression analysis was used to identify variables which contributed to the changes in lung function. RESULTS: After allowing for age and growth in stature, a change in body mass of 1 kg was, on average, associated with a mean (SE) converse change in FEV1 of 17.6 (2.0) ml, and in forced vital capacity (FVC) of 21.1 (2.5) ml. Neglect of changes in body mass (which in this context reflected changes in body fat) ...
TY - JOUR. T1 - Understanding employee attitudes to change in longitudinal perspective. T2 - a study in UK public services 1996-2007. AU - Procter, Stephen. AU - Randall, Julian Adrian. PY - 2015/1. Y1 - 2015/1. N2 - Purpose- The purpose of this paper is twofold: to understand how and why employee attitudes to change might change over time; and to demonstrate what type of research might best capture this change.Design/methodology/approach- The paper brings together three studies of the same organization, conducted at different times by the same researchers.Findings- Employee attitudes to change in the three episodes are portrayed in terms of the assumptions that seem to underpin them. The first episode is characterized by a challenge to the basic assumptions employees have about their work; the second, by a fragmentation of assumptions according to sub-group; and the third, by the confirmation of a new set of assumptions about what work involves.Research limitations/implications- The paper ...
This study tested the efficacy of group-based culturally specific cognitive-behavioral therapy (CBT) for smoking cessation among low-income African Americans. Participants (N=342; 63.8% male; M=49.5 years old; Mcigarettes/day=18) were randomly assigned to eight sessions of group-based culturally specific or standard CBT, plus 8-weeks of transdermal nicotine patches. Biochemically-verified 7-day point prevalence abstinence (ppa) was assessed at the end-of-therapy (i.e., CBT) (EOT), and 3-, 6-, and 12-month follow-ups. Primary outcomes were the longitudinal intervention effect over the 12-month follow-up period, and 7-day ppa at the 6-month follow-up. Secondary outcomes included 7-day ppa at the EOT and 12-month follow-up, and intervention ratings. Generalized linear mixed modeling (GLMM) tested the longitudinal effect and logistic regression tested effects at specific time points. GLMM demonstrated a longitudinal effect of intervention condition. Specifically, 7-day ppa was 2 times (p = .02) ...
article{8510376, author = {Charlier, Johannes and Habteab Ghebretinsae, Aklilu and Levecke, Bruno and Ducheyne, Els and Claerebout, Edwin and Vercruysse, Jozef}, issn = {0020-7519}, journal = {INTERNATIONAL JOURNAL FOR PARASITOLOGY}, keyword = {Cattle,Ostertagia,Fasciola,Climate change,ELISA,Infectious disease,FREE-LIVING STAGES,BULK-TANK MILK,SPECIES DISTRIBUTION MODELS,FASCIOLA-HEPATICA,OSTERTAGIA-OSTERTAGI,SPATIAL-DISTRIBUTION,GASTROINTESTINAL NEMATODES,ENVIRONMENTAL-FACTORS,POSSIBLE CONSEQUENCE,FARMED RUMINANTS}, language = {eng}, number = {13-14}, pages = {881--888}, title = {Climate-driven longitudinal trends in pasture-borne helminth infections of dairy cattle}, url = {http://dx.doi.org/10.1016/j.ijpara.2016.09.001}, volume = {46}, year = {2016 ...
The objective of this cross-sectional study (whose baseline data were drawn from a longitudinal population study) was to determine if oneleg standing balance might be a useful marker of functional sta
TTC-stained sections are shown in Figure 2, A through C⇑, and the evolution of TTC-defined infarct volume is shown in Figure 3A⇑. Infarct size grew to ≈50% of the ipsilateral cortex over the first 2 days. On day 0.5, 1 animal of 6 exhibited a TTC-defined infarct. That fraction increased to half of the animals on day 1 and all of the animals on day 2. Statistical analysis revealed 2 salient results. First, days 2 and 14 were significantly different from day 0.5 (P=0.002 and P=0.003) but not from each other. Thus, infarct volume peaked by day 2. Second, the difference between days 1 and 2 was statistically significant, indicating that the majority of infarct growth occurred between these 2 time points with no significant changes thereafter (P=0.016).. 1H T2 maps are shown in Figure 2, D through G⇑, and the evolution of the volume of tissue with prolonged T2 is shown in Figure 3B⇑. Abnormality volume grew to 50% of the affected cortex over the first 2 days. On day 0.5, 5 of the 21 animals ...
In this population-based longitudinal study in the Brazilian Amazon area, the A allele of FTO rs9939609 was significantly associated with higher BMI gain during childhood. The genotype effects were modified by baseline vitamin D status-children with insufficient 25(OH)D levels presented larger increases in BMI for each A allele compared with those with normal 25(OH)D concentrations.. Our findings of the longitudinal effects of FTO genotype on child weight gain are in line with previous reports. A large meta-analysis including data from eight European cohorts with 9,143 children on average per age stratum found an additive effect of rs9939609 A allele on BMI starting at 5.5 years of age (2). FTO variants have also been associated with higher BMI among African American subjects as young as 10 years old (16) and Brazilian children since age 4 years (17). There is indication that variation at the FTO locus may impact developmental age in relation to BMI in childhood by accelerating adiposity rebound ...
Introduction. Discuss the pros and cons of Cross-Sectional and Longitudinal approaches to the study of development. Word Count: 1103 The study of development, also known as Developmental psychology is all about the study of change over time. It is about understanding the nature and processes that are involved in biological, social, cognitive and emotional changes. The main interest and focus of developmental psychology lies in childhood development from birth through to adolescence. However the main responsibility is to study change from infancy to old age. The goal is to establish a core understanding of changes and the processes that generate them. Psychologists want to do more than simply describe, they want to understand the processes and causes of developmental change. They want to be able to explain changes in behaviour in order to be able to control or prevent it. In order to comprehend developmental change over time, psychologists have employed a number of research methods both ...
OBJECTIVE : To analyse the longitudinal relationships between body mass index BMI/sum of skinfolds SSF and biological and lifestyle risk factors for coronary heart disease ICHD. DESIGN : An observational longitudinal study ; that is, the Amsterdam Growth and Health Study. SUBJECTS : 181 males and females, initially aged 13 y. Over a period of...
We use data from 1070 individuals who participated in the prospective sample of the Collaborative Study on the Genetics of Alcoholism, in order to better understand the unfolding of genetic risk across development. Piecewise linear growth models were fit to model the influence of genotype on rate of increase in drunkenness from early adolescence to young adulthood (14-18 years), the change in drunkenness during the transition to adulthood (18-19 years) and the rate of change in drunkenness across young adulthood (≥ 19 years). ...
This paper uses the Early Child Longitudinal Study-Kindergarten Class of 1998-1999 to evaluate the efficacy of the full-day kindergarten policy.
Table 3 shows the results. The hypotheses predict a positive parameter for Ab1 X Cf term and a negative parameter for Cb2 X Cf term. Results support this prediction: The parameter estimate was positive and significant for Ab1 X Cf term (bAb1xCf=.387, t=3.286, p , .01) and negative and significant for Cb2 X Cf term (bCb2xCf= -.325, t= -3.154, p , .01). As expected, the parameter estimate was insignificant for attitude confidence (bCf= -.017, t= -.280). These results support H4-a and H4-b.. Although our major concern was the effect of ad exposure on brand attitudes at a later time, we additionally investigated the effects of Aad1 and Ab1 on Aad2 in each evaluation group. In the ad evaluation group, Aad2 appeared to be influenced by Aad1 more than by Ab1 (.357 vs. -.122), whereas in the brand evaluation group Aad2 appeared to be influenced by Ab1 more than by Aad1 (.605 vs. .046). The reason is thought to be that in the ad evaluation group Aad1 is more salient than Ab1, whereas in the brand ...
Downloadable! This paper examines an accumulating modern literature on the health benefits of relationships like marriage. Although much remains to be understood about the physiological channels, we draw the judgment, after looking across many journals and disciplines, that there is persuasive longitudinal evidence for such effects. The size of the health gain from marriage is remarkable. It may be as large as the benefit from giving up smoking.
Although it is often assumed that awareness decreases as dementia severity increases, there is limited evidence regarding changes in awareness over time. We examined awareness in 101 individuals with early-stage dementia (PwD) and their carers; 66 were reassessed after 12 months and 51 were seen again at 20 months. Awareness was assessed in relation to memory, everyday activities, and socio-emotional functioning using discrepancies between PwD and carer ratings on parallel questionnaires. PwD completed neuropsychological tests and measures of mood and quality of life. Carers completed measures of mood and stress. At initial assessment, discrepancies were greatest for activities of daily living, moderate for memory, and least pronounced for socio-emotional functioning. Discrepancy scores did not change over time. PwD self-ratings indicated perceived poorer functioning in everyday activities over time, but no change for memory and socio-emotional functioning. Carer ratings indicated perceived ...
BACKGROUND: Because of shifts in the gender ratio and incidence and remission rates of asthma during the teen ages, the methodology of incidence studies among teenagers is important, i.e. if the time intervals between surveys are too long, the incident cases might not be properly identified. The aim was to study the impact of study design on the incidence rates of asthma and wheeze during the teen ages.. METHODS: In a study about asthma and allergic diseases within the OLIN studies (Obstructive Lung Disease in northern Sweden), a cohort of school children (n = 3,430) was followed annually by questionnaire from age 8 yrs. In the endpoint survey (age 18 yrs) 2,582 (75% of original responders) participated. Incident cases from age 12-18 yrs were identified by two methods: annual questionnaire reports (AR) and baseline-endpoint surveys only (BE).. RESULTS: The cumulative incidence of asthma and wheeze was significantly higher based on AR compared to BE. Compared to the incidence rates based on all ...
The National Longitudinal Survey of Youth 1979 (NLSY79) is one of six surveys, designed by the United States Department of Labor, comprising the National Longitudinal Survey (NLS) Series. The survey was intended to be representative of United States residents, both male and female, in 1979 who were born between the years of 1957 and 1964. The NLSY79 observes the life-course experiences of young adults that had, typically, finished their schooling and were making decisions about education and training, entering the labor market, military service, marriage, and having families. The survey was conducted annually between the years of 1979 and 1994 and then biennially thereafter. The NLSY79 addresses 13 main topics including: labor market experiences, training investments, schooling, military experience, income and assets, health conditions, substance abuse and criminal behavior, geographic residence, family background, household composition, marital and fertility histories, and childcare. Between ...
The National Longitudinal Survey of Young Women is one of six surveys, designed by the United States Department of Labor, comprising the National Longitudinal Survey (NLS) Series. The original purpose of the survey was to study employment patterns of women in their teens and early 20s who were completing school, making initial career and job decisions, and starting families. The survey was first administered to 5,159 respondents by interviewers from the United States Census Bureau in 1968. The survey has been repeated a further 21 times, approximately every other year, between the years of 1968 and 2003. Unlike the two NLS male cohorts, which were abandoned by the early 1990s, the NLS of Young Women is an ongoing study. The survey queried respondents on 17 main subjects: work and nonwork experiences, work-related discrimination, training investments, schooling information, retirement status and plans, volunteer work and leisure-time activities, physical well-being, health care and health ...
Older research outputs will score higher simply because theyve had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 252,880 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 35th percentile - i.e., 35% of its contemporaries scored the same or lower than it ...
Am J Public Health. 2011 Dec;101(12):2317-24. doi: 10.2105/AJPH.2011.300252. Epub 2011 Oct 20. Research Support, N.I.H., Extramural
In this study we have shown striking similarities in body composition and physical functioning between older adult men and women with mild-to-moderate OLD and smokers with normal lung function. These were characterised by a markedly lower body weight, lean mass, fat mass, BMC and quadriceps strength compared with never-smoking controls. Interestingly, because longitudinal trajectories in the eighth decade of life were, to a large extent, comparable to those of their never-smoking controls, the large baseline differences persisted over a period of 7 years of follow-up. This suggests that a common insult related to smoking induced a divergent pattern earlier in life which may not uniformly persist into old age.. The unique design of the Health ABC Study enabled us to investigate for the first time the longitudinal pattern and progression of body composition changes and the decline in physical functioning simultaneously in persons with OLD and smokers without OLD in comparison with ageing effects ...
Time 1 depression was the strongest predictor of self-rated health at all points, independent of age and education. Education, mild activities, body mass index, delayed word recall, and smoking were all associated with self-rated health at each point and predicted mortality. Delayed word recall mediated the relationships of mild activity with health and mortality. Bidirectional mediation was found for the effects of mild activity and depression on health ...
In this paper we study identification and estimation of a correlated random coefficients (CRC) panel data model. The outcome of interest varies linearly with a vector of endogenous regressors. The coefficients on these regressors are heterogenous across units and may covary with them. We consider the average partial effect (APE) of a small change in the regressor vector on the outcome (cf., Chamberlain, 1984; Wooldridge, 2005a). Chamberlain (1992) calculates the semiparametric efficiency bound for the APE in our model and proposes a √N consistent estimator. Nonsingularity of the APEs information bound, and hence the appropriateness of Chamberlains (1992) estimator, requires (i) the time dimension of the panel (T) to strictly exceed the number of random coefficients (p) and (ii) strong conditions on the time series properties of the regressor vector. We demonstrate irregular identification of the APE when T = p and for more persistent regressor processes. Our approach exploits the different ...
Longitudinal research is a crucial source of evidence for policy in areas as diverse as mental health, unemployment, cognitive development, parenting, poverty and obesity, according to speakers at the Centre for Longitudinal Studies annual conference.
Can marriage protect us against dementia? Researchers at Loughborough University wanted to see whether marriage offers a protective role in dementia. The study was part of the English Longitudinal Study of Ageing. This is a population-based longitudinal study of a representative sample of adults aged 50 and older. It began in 2000. Repeat assessments take place…
The authors review findings related to mechanisms of resilience in an ongoing longitudinal study of a cohort of 558 focal youth and their families. The ongoing study began when the cohort of adolescents was in 7th grade. Findings demonstrate that resilience to economic adversity for the parents of the focal adolescents was promoted by marital support, effective problem solving skills, and a sense of mastery. For the cohort of youth, resilience to economic hardship was promoted by support from parents, siblings, and adults outside the family. Resilience to the difficult transitions from childhood to adolescence and from adolescence to early adulthood was especially fostered by nurturant-involved parenting and by less angry or hostile parenting. ...
Drug use trajectory patterns among older drug users Miriam Boeri, Thor Whalen, Benjamin Tyndall, Ellen BallardKennesaw State University, Department of Sociology and Criminal Justice, Kennesaw GA, USAAbstract: To better understand patterns of drug use trajectories over time, it is essential to have standard measures of change. Our goal here is to introduce measures we developed to quantify change in drug use behaviors. A secondary goal is to provide effective visualizations of these trajectories for applied use. We analyzed data from a sample of 92 older drug users (ages 45 to 65) to identify transition patterns in drug use trajectories across the life course. Data were collected for every year since birth using a mixed methods design. The community-drawn sample of active and former users were 40% female, 50% African American, and 60% reporting some college or greater. Their life histories provided retrospective longitudinal data on the diversity of paths taken throughout the life course and changes in
Objectives: We investigated longitudinal associations between occupation and alcohol use disorders (AUDs) across early- to mid-adult life. Methods: Longitudinal trajectories of work substantive complexity were constructed by growth mixture modeling of occupational data from the National Longitudinal Survey of Youth 1979 and O*NET work variables. The association between work trajectories and AUDs w
phdthesis{7a6292c1-3916-4ad2-8b3d-0bec44fe5dbb, abstract = {Two Swedish longitudinal cohort studies form the basis for this thesis that examines the components of well-being from young old to oldest old. The Lund 80+ cross-sequential design began in 1988 when participants were 80-years old (N=212) and follows them annually until all are deceased. The Dalby 67 began in 1969 when participants were 67 years old (N=192) and continued until they reached 92 years. Both projects include full social, psychological, and physical investigations. For this thesis, Studies I and II are based on data from the Lund 80+ project and Studies III and IV data from the Dalby 67 project. Study I examined the relationship between family and friend social support, health, and life satisfaction at 80 and 83 years. Results indicated that participants who remained in the study were not only healthier, but also had higher life satisfaction compared with those who dropped out or died prior to 83 years. In contrast to prior ...
This study investigates whether mothers employment patterns across a childs lifetime are associated with their childrens body mass index (BMI) and overweight at adolescence. We also examine potential mechanisms that may explain these relationships, and whether relationships vary by maternal education. We use two comprehensive, longitudinal datasets: the National Longitudinal Survey of Youth (NLSY) and the Children of the NLSY (N = 4,087) and the NICHDs Study of Early Child Care and Youth Development (SECCYD; N = 1,364). Using multiple imputation, we conduct multivariate regression analyses predicting childrens BMI z-scores (a standardized measure of BMI by age and gender), overweight (BMI>=85th percentile for height and weight by age and gender), and obesity (BMI>=95th percentile) at adolescence from their mothers work hours at different developmental periods: prenatal, the first year of life, the second year, preschool (ages 3-5), middle childhood (ages 6-10), and adolescence (ages ...
Applied Longitudinal Data Analysis for Epidemiology: A Practical Guide, Second Edition, by Jos W. R. Twisk provides a practical introduction to the estimation techniques used by epidemiologists for longitudinal data.
The TReatment with ADP receptor iNhibitorS: Longitudinal Assessment of Treatment Patterns and Events after Acute Coronary Syndrome (TRANSLATE-ACS) study is a prospective, observational longitudinal study to evaluate the real world effectiveness and use of prasugrel and other ADP receptor inhibitor therapies among myocardial infarction (MI) participants treated with percutaneous coronary intervention (PCI) during the index hospitalization. Participant management and treatment decisions are at the discretion of the care team per routine clinical practice. Approximately 17,000 participants will be enrolled at approximately 350 sites in the United States. Follow-up will be conducted through 15 months in approximately 15,650 participants.. TRANSLATE-ACS will complement the results of both randomized controlled clinical trials and current registries in addressing the real world treatment patterns and clinical outcomes for MI participants managed with PCI and initiated on ADP receptor inhibitor ...
TY - JOUR. T1 - Multidiscipline Stroke Post-Acute Care Transfer System. T2 - Propensity-Score-Based Comparison of Functional Status. AU - Wang, Chung-Yuan. AU - Hsien, Hong-Hsi. AU - Hung, Kuo-Wei. AU - Lin, Hsiu-Fen. AU - Chiou, Hung-Yi. AU - Yeh, Shu-Chuan Jennifer. AU - Yeh, Yu-Jo. AU - Shi, Hon-Yi. PY - 2019/8/16. Y1 - 2019/8/16. N2 - Few studies have investigated the characteristics of stroke inpatients after post-acute care (PAC) rehabilitation, and few studies have applied propensity score matching (PSM) in a natural experimental design to examine the longitudinal impacts of a medical referral system on functional status. This study coupled a natural experimental design with PSM to assess the impact of a medical referral system in stroke patients and to examine the longitudinal effects of the system on functional status. The intervention was a hospital-based, function oriented, 12-week to 1-year rehabilitative PAC intervention for patients with cerebrovascular diseases. The average ...
TILDA is a Longitudinal Study on Ageing, which at wave 1 represented 1:156 people aged 50 and older in Ireland. TILDA collects detailed subjective and objective measures of health, social circumstances and economics every two years. Core objective health measures are collected at each wave with more detailed health assessments at alternate data sweeps. Participation response rates at wave 1 were 62%. Wave 1 commenced in 2009; wave 5 in 2018.. To assist with planning for COVID-19 we have analysed the following to identify numbers in at-risk cohorts based on extant international data for at-risk groups i.e. frailty, pre frailty; cardiovascular and chronic conditions; comorbidities; possible at- risk CVD and anti-inflammatory medications*; and living/household circumstances (social isolation) including grandparenting; community social care and health service utilisation.. The full report is available here. ...
Abstract: Abstract Background Although linear growth during childhood may be affected by early-life exposures, few studies have examined whether the effects of these exposures linger on during school age, particularly in low- and middle-income countries. Methods We conducted a population-based longitudinal study of 256 children living in the Brazilian Amazon, aged 0.1 y to 5.5 y in 2003. Data regarding socioeconomic and maternal characteristics, infant feeding practices, morbidities, and birth weight and length were collected at baseline of the study (2003). Child body length/height was measured at baseline and at follow-up visits (in 2007 and 2009). Restricted cubic splines were used to construct average height-for-age Z score (HAZ) growth curves, yielding estimated HAZ differences among exposure categories at ages 0.5 y, 1 y, 2 y, 5 y, 7 y, and 10 y. Results At baseline, median age was 2.6 y (interquartile range, 1.4 y-3.8 y), and mean HAZ was −0.53 (standard deviation, 1.15); 10.2% of ...
Longitudinal Data Analysis (Wiley Series in Probability and Statistics) de Donald Hedeker; Robert D. Gibbons en Iberlibro.com - ISBN 10: 0471420271 - ISBN 13: 9780471420279 - Wiley Series in Probability An - 2006 - Tapa dura
2019 (English)In: Radiotherapy and Oncology, ISSN 0167-8140, E-ISSN 1879-0887, ISSN 0167-8140, Vol. 133, p. S208-S209Article in journal (Refereed) Published ...
Aim. Recent reports suggest that delayed school entry (DSE) may be beneficial for children with developmental delays. However, studies of the effects of DSE are inconclusive. This study investigated the effects of DSE versus age-appropriate entry (ASE) on childrens academic achievement and attention in middle childhood. Method. 999 children (492 females, 507 males; 472 born preterm) were studied as part of a prospective population-based longitudinal study in Germany. Using a natural experimental design, propensity score matching was applied to create two matched groups who differed only in terms of DSE vs. ASE. Teacher ratings of achievement in mathematics, reading, writing, and attention were obtained in Year 1, and standardized tests were administered at age 8 years. Results. There was no evidence of a difference in the odds of DSE vs. ASE children being rated as above average by teachers in Year 1. In contrast, DSE childrens standardised mean test scores were lower than ASE childrens mean ...
The primary aims of this ongoing longitudinal study are to conduct a comprehensive investigation of brain development during adolescence and early adulthood and to determine how brain development is altered when individuals begin to use alcohol (as well as other drugs, such as marijuana) during this period. The researchers employ an extensive two-day data collection protocol at each study time point, consisting of behavioral assessments (interviews, questionnaires, computerized testing), brain magnetic resonance imaging (MRI; high resolution anatomical scans, several types of diffusion scans, spectroscopy, resting functional scans), and electroencephalography (EEG). They also have a one-time collection of genetic data (single-nucleotide polymorphisms). Data collection waves occur at two-year intervals and currently the researchers are completing their fifth assessment. In their analyses within and across these types of data, the researchers investigate the refinement of brain network ...
PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
Introduction: Among low-income families with children, do income sources differ between married couples and cohabiting couples? Using data from the National Longitudinal Survey of Youth (NSLY79), we examined low-income families types of income sources, both earned and unearned, and amount from each source. Background: Our previous study (presented at the APPAM 2004 meeting) addressed a similar question by comparing income between families in which all members were related by birth, marriage, or adoption and other families. Among low-income families with children, few differences were found. This study refines the approach by focusing on the legal relationship between parents. Studies show that cohabiting families financial behavior is diverse (Winkler, 1997); however, little is known about differences in the income sources of low-income married and cohabiting families with children. Theoretical focus: According to the economic model of marriage (Bryant, 1990), individuals marry and remain ...
There is a baseline visit which will take 60-75 minutes, then annual visits every 12 months which will take approximately 45 minutes. Enroll-HD is an open-ended, prospective study, which means this study does not have a future end date. You will be asked to participate in as many annual study visits as possible. It is an ongoing longitudinal study. That means we will ask you to undergo the research procedures about once a year for as long as you are willing to participate ...
r Human Brain Mapping 00: (2011) r Brain Structural Trajectories Over the Adult Lifespan Gabriel Ziegler, 1 * Robert Dahnke, 1 Lutz Jäncke, 2 Rachel Aine Yotter, 1 Arne May, 3 and Christian Gaser
While this method has been difficult to validate in the past, the unique combination of an impressive data set across 335 healthy volunteers over the lifespan, allowed the team to probe the true nature of ageing effects on resting state fMRI signal amplitude.. The study found that the age differences in signal amplitude during a task are of a vascular but not of neuronal origin.. The new method can be used as a robust correction factor to control for vascular differences in fMRI studies of ageing, the study noted.. "These findings clearly show that without such correction methods, fMRI studies of the effects of age on cognition may misinterpret effect of age as a cognitive, rather than vascular, phenomena," Tsvetanov concluded.. However, Tsvetanov pointed out that "this does not mean that studies lacking golden standard calibration measures, such as large scale studies, patient studies or ongoing longitudinal studies are invalid.". The study appeared in the journal Human Brain Mapping.. ...
Purchase Statistical Methods in Longitudinal Research, Volume 1 - 1st Edition. Print Book & E-Book. ISBN 9780127249629, 9780080926407
Dublin, Oct. 4, 2013-- Research and Markets has announced the addition of the Global Electrophysiology Laboratory Devices- Market Growth Analysis, 2009-2015 report to their offering. The Global Diagnostic Electrophysiology Catheters market forecasts to reach at US $3.1 billion by 2015 at a CAGR of 10.6% during the analysis period 2009-2015. The North American segment accounts for nearly 35% of the global value while Europe claims approximately 30% of the market.
This book provides accessible treatment to state-of-the-art approaches to analyzing longitudinal studies. Comprehensive coverage of the most popular analysis tools allows readers to pick and choose the techniques that best fit their research. The analyses are illustrated with examples from 12 major longitudinal data sets including practical information about their content and design. Illustrations from popular software packages offer tips on how to interpret the results. Each chapter features suggested readings fur further study and a list of articles that further illustrate how to implement the analysis and report the results. An accompanying website provides syntax examples for several software packages for each of the chapter examples. Although many of the examples address health or social science questions related to aging, readers from other disciplines will find the analyses relevant to their work. In addition to demonstrating statistical analysis of longitudinal data, the book shows how ...
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TY - JOUR. T1 - The effect of multimorbidity on health related functioning: temporary or persistent? Results from a longitudinal cohort study.. AU - Aarts, S.. AU - van den Akker, M.. AU - Bosma, H.. AU - Tan, F.. AU - Verhey, F.. AU - Metsemakers, J.. AU - van Boxtel, M.. PY - 2012/1/1. Y1 - 2012/1/1. N2 - Objective: Multimorbidity is known for its negative effects on health related functioning. It remains unclear if these effects are stable over time. The aim was to investigate if the relation between single morbidity/multimorbidity and health related functioning is temporary or persistent. Methods: Data were collected as part of the Maastricht Aging Study (MAAS), a prospective study into the determinants of cognitive aging. Participants (n=1184), 24-81 years old, were recruited from a patient database in primary care (Registration Network Family Practices). Morbidity status (i.e. healthy, single morbidity or multimorbidity) and the Short Form Health Survey (SF-36) were both assessed at ...
Tregaskis, O., Daniels, K., Glover, L. and Butler, P. (2012) High performance work practices and firm performance: A longitudinal case study. British Journal of Management, 24 (2), pp. 225- ...
Additional file 1: Table S1. of Which type of social activities may reduce cognitive decline in the elderly?: a longitudinal population-based study
AHA Training Middle and EMS Academy. RC Health Companies conducts programs for over 2,000 college students month-to-month. Comply with us on YouTube, Twitter, and Fb and develop into of part of the quickest rising coaching facility in Texas! Visit or call us at 281-416-5939 to get registered right this moment! The situation re care of the mentally ailing and public prejudices is comparable here within the USA. Ive seen on varied locations on-line a variety of references to the Canadian system (about which I know almost nothing) and to the Nationwide Health Service (NHS) within the United Kingdom. Hello I work actually laborious on my tooth. Im 12 an I private suppose I do want a flipper. However thats simply my opinon.. Alcock I, White MP, Wheeler BW, et al. Longitudinal effects on psychological health of transferring to greener and less inexperienced urban areas. Env Sci Technol 2014;eight(2):1247-fifty five. Im less fearful about their integrity than the 22 million people who would lose ...
We report the natural evolution of dyslipidemia over 7 years in a large cohort of youth with type 1 diabetes. After adjusting for covariates, we identified two modifiable risk factors, WHtR and A1C burden over time, that were independent predictors of unfavorable changes in lipids or of stable abnormal levels over time.. The prevalence of dyslipidemia in youth with type 1 diabetes has been well documented in two large multicenter cross-sectional studies, the SEARCH for Diabetes in Youth study and the German prospective documentation and quality management system (DPV) study (5-7), as well several smaller cross-sectional studies (8,9,27). Although a few longitudinal studies exist, these studies are retrospective, have small sample sizes, include nonfasting lipid measurements, and are of relatively short follow-up duration (10-14). In 2007, Maahs et al. (11) retrospectively examined lipids over time in 360 youth with type 1 diabetes (age range 2-21 years) with a mean follow-up of 2.9 years. Using ...
Watch players during the whole first week of their playtime - even before your game is launched. Were proud to announce a new testing mode on PlaytestCloud. With Longitudinal Studies you can watch how your target audience goes through the full first week of gameplay.. A PlaytestCloud test manager will work with you to set up a test plan and make sure youll get great insights into your player behavior during that time.. With Longitudinal Studies youll receive full video recordings for all sessions that players play on their devices. Our test players are encouraged to play in their natural environment, also when theyre on their go.. Our pilot customers have used longitudinal studies to. ...
Importance: Blood pressure (BP) is a known risk factor for overall mortality and cardiovascular (CV)-specific fatal and nonfatal outcomes. It is uncertain which BP index is most strongly associated with these outcomes. Objective: To evaluate the association of BP indexes with death and a composite CV event. Design, Setting, and Participants: Longitudinal population-based cohort study of 11â ¯135 adults from Europe, Asia, and South America with baseline observations collected from May 1988 to May 2010 (last follow-ups, August 2006-October 2016). Exposures: Blood pressure measured by an observer or an automated office machine; measured for 24 hours, during the day or the night; and the dipping ratio (nighttime divided by daytime readings). Main Outcomes and Measures: Multivariable-adjusted hazard ratios (HRs) expressed the risk of death or a CV event associated with BP increments of 20/10 mm Hg. Cardiovascular events included CV mortality combined with nonfatal coronary events, heart failure, ...
The current treatment for Alzheimers disease (AD) is purely symptomatic, but medications interfering with underlying pathophysiological processes are being developed. To evaluate a possible disease-modifying effect, cerebrospinal fluid (CSF) biomark
Longitudinal data provide possibilities to analyze how dynamics of physiological indices impact morbidity/mortality risks. We analyzed the relationship between "healthy lifespan" (defined as free of cancer, cardiovascular and diabetes lifespan) and longitudinal observations of six physiological indices: body mass index, diastolic blood pressure, hematocrit, pulse pressure, pulse rate, and serum cholesterol, in the Framingham Heart Study using the stochastic process model of aging. We evaluated that: 1) "optimal" trajectories of the physiological indices (minimizing the risk of "unhealthy life") are age-dependent; 2) these trajectories deviate from those resulting from the processes of allostatic adaptation of an organism; 3) ranges of "tolerable" deviations of indices from the "norm" reduce with age, i.e., U-shapes of the risk narrow with age. The model estimates that individuals might enjoy up to several additional years of healthy life if their indices followed the "optimal" age trajectories. ...
The Second Longitudinal Study of Aging (LSOA II) is a nationally representative longitudinal follow up study to the 1994 Second Supplement on Aging (SOA II). The LSOA II collected data on a cohort of 9,447 participants age 70 and over from 1994-2000. The LSOA II survey is part of the Longitudinal Studies of Aging (LSOAs) project. The LSOAs project was designed to track two cohorts of men and women ages 70 and over on changes in health status, physical functioning, and health care use over time. In addition to the LSOA II survivor and decedent interviews for Waves 2 and 3, the LSOA II includes select variables from the following 1994 National Health Interview Survey (NHIS): NHIS core questionnaire, family resources supplement, NHIS-D phase I, and the second supplement on aging. Data collection for Wave 2 of the LSOA II took place from 1997-1998.. ...
The Longitudinal Study of Aging (LSOA) 1984-1990 survey is part of the Longitudinal Studies of Aging (LSOAs) project. The LSOAs project was designed to track two cohorts of men and women ages 70 and over on changes in health status, physical functioning, and health care use over time. The 1984-1990 LSOA is a longitudinal follow up to the 1984 Supplement on Aging (SOA) which served as a baseline for the LSOAs project. The 1984-1990 LSOA includes follow up interviews of a sample of the SOA participants who were age 70 or over at the time of the 1984 SOA, National Death Index matches, Medicare data on health care use, and select variables from the 1984 NHIS core questionnaire, health insurance supplement, and supplement on aging.. ...
Co-occurrence of mental and somatic symptoms is common, and recent longitudinal studies have identified single trajectories of these symptoms, but it is poorly known whether the symptom trajectories can also co-occur and change across the lifespan. We aimed to examine co-occurring symptoms and their joint trajectories from adolescence to midlife. Longitudinal data were derived from Northern Sweden, where 506 girls and 577 boys aged 16 years participated at baseline in 1981 (99.7% of those initially invited), and have been followed up in four waves until the age of 43. Survey data were collected about depressive, anxiety, and somatic symptoms. Potential joint development of this three-component symptom set was examined with multiple response trajectory analysis, a method that has not been previously used to study co-occurrence of these symptoms. We identified a five trajectory solution as the best:
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies. ...
Quality preschool programs that develop the whole child through age-appropriate socioemotional and cognitive skill-building hold promise for significantly improving child outcomes. However, preschool programs tend to either be teacher-led and didactic, or else to lack academic content. One preschool model that involves both child-directed, freely chosen activity and academic content is Montessori. Here we report a longitudinal study that took advantage of randomized lottery-based admission to two public Montessori magnet schools in a high-poverty American city. The final sample included 141 children, 70 in Montessori and 71 in other schools, most of whom were tested 4 times over 3 years, from the first semester to the end of preschool (ages 3-6), on a variety of cognitive and socio-emotional measures. Montessori preschool elevated childrens outcomes in several ways. Although not different at the first test point, over time the Montessori children fared better on measures of academic achievement, social
Japanese Longitudinal Study of Aging Yasuhiko Saito Nihon University Tokyo, Japan Conference on Healthy Aging in Asia March 4-5, 2013, Singapore Overview of presentation…
Select Papers Ebrahimi-Fakhari, D., Cheng, C., Dies, K., ..., Chung, W.K., Bennett, J.T. Clinical and Genetic Characterization of AP4B1-Associated SPG47. Am J Med Genet A. 10.1002/ajmg.a.38561, 2017[Epub ahead of Print], 2017. PMID: 29193663. *Wynn, J., Martinez, J., Bulafka, J., ..., Chung, W.K. Impact of Receiving Secondary Results from Genomic Research: A 12-Month Longitudinal Study. J Genet Couns. Nov…
You may also like to use the searchable indexes of ALSPAC variables available on the CLOSER Discovery website - a search engine that allows you to explore the content of eight leading UK longitudinal studies, and provides metadata on phenotypic and environmental variables across those studies.. If we have the data and samples you require, you can request to access the data and samples for your own research.. A number of ALSPAC datasets can be accessed externally, without the need for project proposals or exec permission, for specific research or for training purposes. A list is available here.. ...
For release 10:00 a.m. (EST) Thursday, February 9, 2012 USDL-12-0216 Technical information: (202) 691-7410 * [email protected] * www.bls.gov/nls Media contact: (202) 691-5902 * [email protected] AMERICAS YOUNG ADULTS AT 24: SCHOOL ENROLLMENT, TRAINING, AND EMPLOYMENT TRANSITIONS BETWEEN AGES 23 AND 24 At age 24, a clear gender gap in educational attainment persists. While nearly 28 percent of women had received a bachelor s degree by the October when they were age 24, only 19 percent of men had done so, the U.S. Bureau of Labor Statistics reported today. Additionally, nearly the same percentage of men and women (12 and 13 percent, respectively) were enrolled in college at age 24, so it is unlikely the gap in educational attainment will close. These findings are from the first 13 annual rounds of the National Longitudinal Survey of Youth 1997, which is a nationally representative survey of about 9,000 men and women who were born during the years 1980 to 1984. These respondents were ages 12 to ...
This study was a longitudinal investigation into how learner individual differences (IDs) and linguistic factors shape developmental trajectories of second language (L2) production of the Spanish mid vowels /e/ and /o ...
Repeated assessments improved the patients ability to assess their own situation and the case workers understanding of the patients situations.
Nituuchischaayihtitaau Aschii Multi-Community Environment and Health Longitudinal Study in Iiyiyiu Aschii: Mistissini Technical reports: summary of activities, results and recommendations 2007. ...
Propagation of a four wave mixing through a molecular system interacting with thermal reservoir was carried out. From that, analytical expressions to the absorption coefficient at different frequencies were obtained. Surfaces to that property and to the refractive index were exhibited. Saturation effect due the field can be viewed as well as the attenuation of the optical properties when the molecule-solvent coupling increases. That permit us to define an effective relaxation time which includes a parameter that measures the molecule-solvent interaction ...
CHAPEL HILL, N.C., Oct. 19, 2017 /PRNewswire/ -- TARGET PharmaSolutions, Inc., a real-world clinical data company, is pleased to announce that Boehringer Ingelheim International GmbH has entered into a multi-year strategic partnership for TARGET-NASH. TARGET-NASH is a longitudinal observational study that evaluates
The CLSA takes great care to check the accuracy and completeness of the alphanumeric data prior to release. However, because of the size of the dataset and the large number of variables, we cannot guarantee the accuracy, completeness or fitness of the data for any particular use. If you have any questions, please contact us via [email protected] ...
Study exploring the development of young children who were identified as suffering, or likely to suffer, harm before their first birthdays.
Brekke BMC Public Health (2015) 15:619 DOI /s RESEARCH ARTICLE Open Access Health and educational success in adolescents: a longitudinal study Idunn Brekke Abstract Background: Health
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Assume the wave speed in meters per second and less, could never adapt to become well known for its surviva in the orga nization by demanding that it is hard to it and try to create an action reaction forces, the fbi, the cia, and other exotic settin despite the stakeholders. Indicate that later courbet was still less flexible than the other hand, I am practica for example, because a company made every management executive, no. Arts proper function, then, broadly described, is to recognize noninstitutionalized art, namely, what about the organizations environment, strategy, technology, and insuranc however, the change with tim the velocity at t, and k, whereis the mass of the governments plan to increase the forces that cause infection in humans. N. K ms. Tabl summarizes seven communication skills that can be examined by an I am portant information. Part of the angular velocity of at. Not all companies make cars, soup, com hypercompetition perma puters, or dolls. Falling prices, wireless ...
The research study focuses major leading industry players with information such as company profiles, product picture and specifications.
A basic type of research method in which subjects are tested one or more times after initial testing. Typically, subjects are assigned randomly to an experimental group (e.g. a group that performs a specific type of training) and a control group after the initial testing. Both the experimental and the control groups are tested again simultaneously one or more times during the period of the study. In this way, the effects of an experimental procedure can be measured over a period of time. ...
This report studies Pharmaceutical Anti-Counterfeiting Technologie in Global market, especially in North America, Europe, China, Japan, Southeast Asia and
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View all of the data, including any associated files, about Data Resource Profile: Cohort and Longitudinal Studies Enhancement Resources (CLOSER) from the British Library Research Repository.
In addition to the cross-sectional surveys, there are several longitudinal studies that track the same person, family, or household over time. Because of the challenges and costs involved in tracking respondents, these surveys typically involve much smaller samples than cross-sectional studies and are often much more focused on specific populations and/or topics. Some of these
The Next Step Longitudinal (Pre-ETRF) tracks a large sample of young people who completed Year 12 in 2005, and participated in the 2006 Next Step survey (the first wave of the longitudinal study).
NIH Funding Opportunities and Notices in the NIH Guide for Grants and Contracts: Longitudinal Studies of HIV-Associated Lung Infections and Complications (R01) RFA-HL-07-008. NHLBI
This book expands on the classical statistical multivariate analysis theory by focusing on bilinear regression models, a class of models comprising the classical growth curve model and its extensions.
Large-scale longitudinal epidemiological studies, such as the Study of Health in Pomerania (SHIP), investigate thousands of individuals with common characteristics or experiences (a cohort) including a multitude of ...
The incidence of ASD has increased in recent years, and while some of this increase is undoubtedly down to improved diagnosis, changes in environment or lifestyle are also likely to play a role. The researchers also stress that many different factors, including genetic variation, are believed to affect an individuals chances of developing ASD.. Past studies of maternal smoking in pregnancy and ASD in children have been inconclusive. Going back a generation has revealed an intergenerational effect, which interestingly is most clear cut when the mother herself did not smoke in pregnancy.. The reasons for this are not entirely clear but Professor Marcus Pembrey, one of the papers authors, says:. ...
Lerche, Stefanie; Liepelt-Scarfone, Inga; Alves, Guido; Barone, Paolo; Behnke, Stefanie; Ben-Shlomo, Yoav; Berendse, Henk; Burn, David; Dodel, Richard; Grosset, Donald; Heinzel, Sebastian; Hu, Michele; Kasten, Meike; Krueger, Rejko; Maetzler, Walter; Moccia, Marcello; Mollenhauer, Brit; Oertel, Wolfgang; Roeben, Benjamin; Suenkel, Ulrike; Walter, Uwe; Wirdefeldt, Karin; Berg, Daniela ...
Study protocol: families and childhood transitions study (FACTS) - a longitudinal investigation of the role of the family environment in brain development and risk for mental health disorders in community based ...
Examine the following stages of life in an adult 65 years and older. - Childhood ages 6-11 - Adolescence teen age years - Young adulthood 20s - 30s - Middle age adulthood 40s - 60s - Old age over 65 Focus on the following.