Design sampling studies. Medical search. Frequent questions

Methods Data from grades 9-12 students who participated in the 2012/2013 Youth Smoking Survey, a nationally generalisable sample of Canadian students (n=27 404) were used to examine cigarette smoking susceptibility among never smokers (n=17 396). (bmj.com)
The program provides methods that are appropriate for matched and independent t-tests, survival analysis, matched and unmatched studies of dichotomous events, the Mantel-Haenszel test, and linear regression. (wikipedia.org)
For studies that involve one test or two conditionally independent or dependent tests, we present methods that are applicable when the true disease status of sampled individuals will be available and when it will not. (oregonstate.edu)
This new edition of Survey Sampling: Theory and Methods has been updated to include the latest research and the newest methods. (routledge.com)
Covering the current state of development of essential aspects of theory and methods of survey sampling, the authors have taken great care to avoid being dogmatic and eschew taking sides in their presentation. (routledge.com)
Methods and analysis ASSIST is a mixed-methods, realist evaluated, national study with an in-depth focus of three case study areas (Birmingham, London and Sheffield). (bmj.com)
Therefore, it is relevant to investigate spatial up-sampling methods, which would allow us to generate dense HRTFs from a sparse set of measurements, and therefore simplify the measurement process ( Zhong and Xie, 2014 ). (frontiersin.org)
A comparison of a range of sample-based sensitivity methods shows that an initial visual assessment can help to select appropriate sensitivity analyses, as they test for different types of relations (i.e. linear, monotonic, and non-monotonic). (ucl.ac.uk)
To this end this course will span established methods of quality assurance and management, and advanced statistical methods including design of experiments. (freevideolectures.com)
Special methods such as EVOP and ROBUST design (Taguchi Methods). (freevideolectures.com)
Robust design by Taguchi Methods. (freevideolectures.com)
Methods involving Group Sequential Designs are one of the earliest deviations from a traditional two-arm clinical trial with no interim looks at the data. (cytel.com)
Continue reading this blog to learn how to use these methods and understand how they can improve trial design. (cytel.com)
There are many new methods addressing novel issues such as, enrichment (focusing on a sub-population of patients), seamless trial designs that combine phase 2 and phase 3 trials, and multi-arm multi-stage trials. (cytel.com)
A reliable assessment of the trend of asthma prevalence requires repeated cross-sectional studies on different occasions on the same population, using the same methods over an adequate period of time. (ersjournals.com)
Repeated cross-sectional surveys with identical study design and ascertainment methods were carried out among random samples of young adults (20-44 yrs) in several Italian areas between 1991 and 2010. (ersjournals.com)
Methods Study Sample The Framingham Heart Study (FHS) is a community-based longitudinal cohort study initiated in 1948 to study determinants of cardiovascular disease (CVD) and its risk factors. (deepdyve.com)
Methods: With a purposeful sampling procedure, 14 specialist nurses in surgical care were included. (lu.se)

This study uses data from a self-reported, cross-sectional survey. (bmj.com)
We develop aBayesianapproach to samplesize and power calculations for cross-sectional studies that are designed to evaluate and compare continuousmedicaltests. (oregonstate.edu)
Design and setting Cross sectional, web based survey. (bmj.com)
We analyzed data from the cross-sectional baseline assessment of the ELSA-Brasil, a cohort study of 15,105 civil servants from six Brazilian cities. (scielo.br)
Between 1991 and 2010, three repeated multicentre cross-sectional surveys on respiratory diseases were carried out by the same research team on random samples of young adults, using the same design. (ersjournals.com)
To address these implementation challenges and to ensure findings fully reflect the situation in the national programme, WHO developed a new survey method using a cross-sectional approach to estimate the level of VL suppression and ADR using a nationally representative sample of people receiving ART in the country. (who.int)
this cross-sectional exploratory study convenience cohort comprised 87 mothers of newborn babies, 26 premature and 61 full-term infants. (bvsalud.org)

This study investigated the prevalence of different oral anomalies among schoolchildren in Sana'a city, Yemen. (who.int)
To assess the prevalence of common mental disorders (CMD) and the association of CMD with sociodemographic characteristics in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) cohort. (scielo.br)
There is evidence of a high prevalence of CMD, 30% in community samples and approximately 50% in primary care samples across a range of settings in low- and middle-income countries, 5 5. (scielo.br)
The present study aimed to assess time trends in the prevalence of current asthma, asthma-like symptoms and allergic rhinitis in Italian adults from 1990 to 2010. (ersjournals.com)
The evidence that there has been a change in asthma prevalence in adults is conflicting, with some studies suggesting that asthma prevalence has stabilised or even decreased [ 7 - 10 ], while others suggest that it is still increasing [ 11 , 12 ]. (ersjournals.com)
While the recent trend in asthma prevalence is uncertain, all studies agree that the prevalence of allergic rhinitis, a condition strongly associated with asthma [ 13 ], is still on the increase [ 4 , 7 , 8 , 14 - 16 ]. (ersjournals.com)
The present study is aimed at quantifying the temporal change in the prevalence of asthma and allergic rhinitis in the past 20 yrs in the adult population of Italy, a country that is characterised by a medium-to-low level of asthma prevalence [ 18 ]. (ersjournals.com)
The study objectives were to investigate the prevalence of HAND and associated factors among treatment experienced adults in Ethiopia. (who.int)
The purpose of this survey was to estimate the prevalence of viral load (VL) suppression and emergence of HIV drug resistance (HIVDR) among individuals receiving antiretroviral therapy (ART) for 36 months or longer in Viet Nam using a nationally representative sampling method. (who.int)

This study suggests that previous meta-analyses of a low-quality body of evidence may have considerably overestimated the effects of plate size on consumption. (biomedcentral.com)
If the outcome is well established, these key population or control parameters can be estimated from previous studies (RCTs or cohort studies) or through meta-analyses. (biomedcentral.com)
These pre-planned interim analyses in sequential designs enable early stopping when preliminary results clearly demonstrate efficacy or futility. (cytel.com)

Findings from this study, along with existing evidence, can be used by policymakers to improve regulation around youth access to ATPs (particularly flavoured varieties). (bmj.com)
Our dissemination strategy has been developed to access and engage key audiences in a timely manner and findings will be disseminated via the study website, social media, in peer-reviewed scientific journals, at research conferences, local meetings and seminars and at a concluding dissemination and networking event for stakeholders. (bmj.com)
Global burden of disease attributable to mental and substance use disorders: findings from the Global Burden of Disease Study 2010. (scielo.br)
The findings of this study confirm the need for substance abuse preven- tion programs and at the same time the importance of increasing efforts to ensure intervention for those who are already dependant. (who.int)
Impact: Findings from this study revealed work conditions that need to be acknowledged during hospital organizations' endeavours to maintain and enhance nursing competence. (lu.se)

ABSTRACT: Using a representative sample of public facilities surveyed in 1993 and 1997, we took advantage of exogenous changes imposed on the Indonesian health system to evaluate the contribution of physicians, nurses, and midwives to the quality of primary care. (who.int)

Summary statistics of genetic instruments associated with knee OA, hip OA, and RA were obtained from corresponding genome-wide association studies (GWASs). (frontiersin.org)

They add incredible value to trials through their abilities to safeguard patients, reach positive conclusions early and keep trial designs simple and streamlined. (cytel.com)

We report results of a qualitative study of patient experiences with video visits with their established primary care clinicians and their preferences for future use of video visits. (annfammed.org)
The study was in two stages, a survey and diary study designed to ascertain frequency of health care utilisation and health status of households, followed by a linked qualitative study consisting of in-depth interviews on a subset of people experiencing a range of common complaints seen in primary care. (socresonline.org.uk)

As part of the "Introduction to Complex Innovative Trial Designs" webinar series, Cytel conducted a webinar presented by Professor Christopher Jennison on Group Sequential Designs and Sample Size Re-estimation. (cytel.com)
The challenge in a group sequential design is to reduce the length of these Phase 3 trials, thereby saving resources and reaching the conclusion sooner. (cytel.com)
A fixed sample study is longer than a group sequential trial and does not involve any interim analysis. (cytel.com)
Professor Jennison explains the theory behind group sequential method and how it works, through case studies. (cytel.com)
In a group sequential test, we set a large sample size and hope to stop early. (cytel.com)
SEQUENTIAL is an East module for planning, simulating, monitoring and communicating group sequential clinical trial designs. (cytel.com)

The VALidation of HPV GENoyping Tests (VALGENT) framework is designed for comparison and clinical validation of HPV assays. (nih.gov)
HPV-Risk assay was performed on DNA extracted panel samples (n=1,295), blinded to clinical data, cytology results, and results from other HPV assays evaluated in VALGENT-4. (nih.gov)
Some of them include insufficient awareness among clinicians, a lack of practical recommendations for clinicians about when to take a blood sample, limited knowledge of the BC guideline, lack of time in clinical practice to perform BC sampling, BC bottles not being readily available, and cost consideration for the patients. (oucru.org)
ASSIST (Assessing the impact of online postal self-sampling for sexually transmitted infections on health inequalities, access to care and clinical outcomes in the UK) aims to assess the impact of these services on health inequalities, access to care, and clinical and economic outcomes, and to identify the factors that influence the implementation and sustainability of these services. (bmj.com)
In addition, full access to trial data reduces the potential for incomplete reporting of study outcomes and improves the medical evidence base, which should ultimately improve clinical decision making. (bmj.com)
Clinical iceberg' studies from an epidemiological perspective have incorporated an analysis of the extent of service use by estimating rates and types of symptoms present in the community compared to those presented to primary care services (e.g. (socresonline.org.uk)
The scope of adaptive clinical trial design has grown in the last two decades. (cytel.com)
We had the opportunity to examine a measure of clinical BA over several time points in the adult life course in addition to inflammatory and DNA methylation age constructed in later adulthood in a large community-based sample under continuous surveillance. (deepdyve.com)

Evidence obtained from cohort studies. (cancer.gov)
Prior to 2011, the World Health Organization (WHO) recommended the prospective cohort studies of patients in conveniently selected sentinel sites to assess the emergence of ADR. (who.int)

Sampling from inadequate frames. (routledge.com)
There is inadequate evidence that screening by endometrial sampling (i.e., biopsy) reduces mortality from endometrial cancer. (cancer.gov)

Several observational studies have explored the associations between Sjögren's syndrome (SS) and certain cancers. (biomedcentral.com)

However, the small sample and the exploratory nature of our research demands replication. (springer.com)
Exploratory and Confirmatory Studies. (mayo.edu)

In fact, even the most modern innovations of survey sampling, both methodological and theoretical, have found a place in this concise volume. (routledge.com)

Design- and model-based variance estimation. (routledge.com)
Re-sampling and variance estimation in complex surveys. (routledge.com)

The authors have undertaken the daunting task of surveying the sampling literature of the past decade to provide an outstanding research reference. (routledge.com)
Introduction The past decade has seen a rapid increase in the volume and proportion of testing for sexually transmitted infections that are accessed via online postal self-sampling services in the UK. (bmj.com)

The objective of this study was to evaluate a home-based DSME intervention in rural Guatemala. (cdc.gov)
Objective This study aimed to explore tobacco smoking in seven major cities of Latin America. (bmj.com)
The objective of this study was to examine the organizational factors that aided or inhibited the implementation of MOVE! (cdc.gov)
Therefore, objective of this study was to evaluate eco-tourism and carbon stock services of the Maindam valley, District Swat, Pakistan. (scielo.br)

Sample Size Re-estimation is another key tool in the modern trial designer's toolkit that proves to be useful. (cytel.com)
Sample size re-estimation is another method to seek the same benefits of reduced sample size and an earlier conclusion. (cytel.com)
In sample size re-estimation, we start with a small study and possibly increase the sample size post an interim analysis. (cytel.com)

We use a simulation approach to illustrate the sampling distribution of the standard deviation for continuous outcomes and the event rate for binary outcomes. (biomedcentral.com)
For normally distributed outcomes, the relative gain in precision of the pooled standard deviation (SD p ) is less than 10% (for each five subjects added per group) once the total sample size is 70. (biomedcentral.com)
A systematic review of published RCTs with continuous outcomes found evidence that the population variation was underestimated (in 80% of reported endpoints) in the sample size calculations compared to the variation observed when the trial was completed [ 2 ]. (biomedcentral.com)
Future studies should evaluate the impact of pharmacists' interventions on patient outcomes. (springer.com)
The Stand Up Victoria study aims to determine whether a 3-month multi-component intervention in the office setting reduces workplace sitting, particularly prolonged, unbroken sitting time, and results in improvements in cardio-metabolic biomarkers and work-related outcomes, compared to usual practice. (biomedcentral.com)

This study aims to identify and explore known and unknown barriers and facilitators to adopting BC sampling recommendations in Indonesia, Thailand and Viet Nam. (oucru.org)
A quantitative survey study using electronic semi-anonymous questionnaires will be performed in Indonesia, Thailand and Viet Nam. (oucru.org)

To examine the causal associations of diet-derived circulating antioxidants with knee osteoarthritis (OA), hip OA, and rheumatoid arthritis (RA) within the two-sample Mendelian randomization (MR) framework. (frontiersin.org)
We conducted the two-sample Mendelian randomization with the public genome-wide association studies (GWASs) summary statistics in European population to evaluate the causality between SS and nine types of cancers. (biomedcentral.com)

Most existing studies have used small and unrepresentative samples and have not followed recommended procedures for randomised controlled trials, leading to increased risk of bias. (biomedcentral.com)
This was due to studies not following recommended procedural guidance for conducting and reporting randomised controlled trials, for example by failing to adequately implement randomisation procedures, and conceal allocation to participants and formally register study protocols. (biomedcentral.com)

PS is an interactive computer program for performing statistical power and sample size calculations. (wikipedia.org)

We conducted a prospective study of a DSME intervention using a quasi-experimental, single-group pretest-posttest design. (cdc.gov)
We conducted a prospective study among employees of our institution during the ARI season 2010/2011 (December-March). (plos.org)

The results of this study are generalisable as the Youth Smoking Survey (YSS) is a large (n=27 404), nationally representative survey. (bmj.com)
0.001), similar to the level found in a representative sample of 390 Norwegian doctors. (bmj.com)
However, no study provided a nationally representative estimate of VL suppression and acquired HIV drug resistance (ADR). (who.int)

Good trial design requires the magnitude of the clinically important effect size to be stated in advance. (biomedcentral.com)

2. In the discussion section, EGRET SIZ is mentioned, and it is suggested that input for such a program which computes sample size for logistic regression would probably be simpler than input for DESIGN or DAYSMITH. (biomedcentral.com)
With photoconductive field sampling in solids, a much simpler solution has been presented. (nature.com)

However, consistent guidelines for the development of studies assessing cyanobacterial toxins and taste-and-odor compounds presently are not available. (usgs.gov)
Sample Design and Analysis Guidelines. (cdc.gov)

Epidemiological studies have confirmed the contribution of active smoking to cardiovascular risk. (bmj.com)

Well-designed RCTs are widely regarded as the least biased research design for evaluating new health technologies and decision-makers, such as the National Institute for Health and Care Excellence (NICE), are increasingly looking to the results of RCTs to guide practice and policy. (biomedcentral.com)
Ethics and dissemination This study has been approved by South Central - Berkshire Research Ethics Committee (ref: 21/SC/0223). (bmj.com)

Photoconductive field sampling enables petahertz-domain optoelectronic applications that advance our understanding of light-matter interaction. (nature.com)
The software enables you to evaluate and compare the operating characteristics of different study designs on multiple information scales as well as graphically. (cytel.com)

No publisher, test developer or retailer (that we know of) publishes, produces, carries or sells study guides, Cliff Notes, Coles Notes, practice tests, etc. for the assessment products that we carry. (creativeorgdesign.com)
Design Cohort study followed by self reported assessment at one year. (bmj.com)

DMADV-Define, Measure, Analyze, Design and verify-the methodology for creating high performance designs. (freevideolectures.com)

The data for tourism services was collected from owners of all the hotels, 100 tourists and key informants of the area at 10% sampling intensity on pretested questionnaire for twenty years period (1997-2017). (scielo.br)

A general population sample of 134 adult participants (aged 18-61 years) was randomly allocated to one of two groups varying in the size of plate used for self-serving lunch: large or small. (biomedcentral.com)
During the study period, a total of 8 participants were dropped, and the completion rate was 98.0% (412/420). (jmir.org)
Weekly emails were sent to the participants (n = 84), reminding them to come to the study center in case of new symptoms. (plos.org)
The participants self-collected an anterior nasal swab from one nostril, and trained study personnel collected one from the other nostril. (plos.org)
Results Sample sizes ranged from 2532 to 3417 participants. (deepdyve.com)

Creative Organizational Design cannot and will not provide free working samples, study guides or practice tests for any of the products that we carry. (creativeorgdesign.com)

McCrum-Gardner, E: "Sample size and power calculations made simple. (wikipedia.org)

The Oral Surveillance post-marketing safety study of tofacitinib in rheumatoid arthritis , for example, linked the agent to higher MACE and venous thromboembolism rates vs a TNF inhibitor. (medscape.com)

Adjusting the required sample sizes for the imprecision in the pilot study estimates can result in excessively large definitive RCTs and also requires a pilot sample size of 60 to 90 for the true effect sizes considered here. (biomedcentral.com)
Challenges With Small Sample Sizes. (mayo.edu)
While long-term extension studies in IBD have not linked oral small molecules to increases in MACE, the sample sizes and duration of follow-up have been limited, the authors noted. (medscape.com)
These large sample sizes were possible through use of TriNetX, a large US claims database that includes millions of patients. (medscape.com)

Since publication of the first edition in 1992, the field of survey sampling has grown considerably. (routledge.com)

Here, we develop a filter-based sampling method compatible with both air quality monitoring and Raman spectral imaging (RSI) for the detection of inhalable-sized microplastics. (acs.org)
The replicated Latin Hypercube sampling method is shown to be efficient at propagating variations between model input and output variables. (ucl.ac.uk)

Blood culture (BC) is the core sample for antimicrobial resistance (AMR) surveillance and diagnostic stewardship. (oucru.org)
Nonetheless, the Secretariat has continued work to simplify and accelerate the various phases of risk-based post-market surveillance: design, planning, execution, analysis and response. (who.int)

Several barriers have been identified that impeded the adoption of BC sampling recommendations. (oucru.org)
A systematic review was performed to identify known barriers and enablers to the adoption of BC sampling recommendations. (oucru.org)

DESIGN: Review of a random sample of published cluster randomised trials from an electronic search in Medline. (bepress.com)
Study sample 300 cluster randomised trials published in 150 journals. (bepress.com)
The survey was conducted between May and August 2014 using a two-stage cluster design. (who.int)

Schlesselman JJ: Case-control Studies: Design, Conduct, Analysis. (wikipedia.org)
Edwardes MD: Sample Size Requirements for Case-Control Study Designs. (biomedcentral.com)
Using a multiple, holistic case study design, we conducted 68 interviews with medical center program coordinators, physicians formally appointed as program champions, managers directly responsible for overseeing the program, clinicians from the program's multidisciplinary team, and primary care physicians identified by program coordinators as local opinion leaders. (cdc.gov)
Case Study of Orthogonal Array application. (freevideolectures.com)
Case Study of product design by Taguchi Philosophy. (freevideolectures.com)
Case Study of initiating Six Sigma DMAIC in Manufacturing. (freevideolectures.com)

The assessments that we sell cannot be studied for and are designed to be taken "cold" so that employers can assess what you already know, not what you can prepare for in advance. (creativeorgdesign.com)
Few studies assess the use of multiple varieties of alternative tobacco by high school students. (bmj.com)

The P program can be used for studies with dichotomous, continuous, or survival response measures. (wikipedia.org)
We recommend that an external pilot study has at least 70 measured subjects (35 per group) when estimating the SD p for a continuous outcome. (biomedcentral.com)

4 - 8 Studies of video visits have demonstrated these benefits in specialty settings including wound care, prenatal genetic screening, family planning, cardiovascular care, and home care. (annfammed.org)

Misconceptions and problems with data visualization and statistical analysis are common in published studies. (mayo.edu)
In this course, learners identify and correct misconceptions about data visualization and statistical analysis that are common in the basic biomedical sciences and other disciplines using small sample size studies. (mayo.edu)

A further drawback to studying health care utilisation in the UK is that there are no data sources which provide longitudinal data on health need linked to the use of health care ( Nicolaas et al 1997 ). (socresonline.org.uk)
We used a sample of public facilities surveyed in 1993 and 1997, to describe the changes in numbers of physicians, nurses, and midwives by region. (who.int)

The first study was the Italian arm of the European Community Respiratory Health Survey (ECRHS), which was carried out between 1991 and 1993 [ 19 ]. (ersjournals.com)

This study examines smoking susceptibility and ATP use in a national sample of Canadian youth. (bmj.com)
This essay examines two graphic design programs that harness these cutting-edge technologies, focusing on logo design, image processing, page design, and web design programs. (writingbros.com)

It provides a wide variety of options for normal and binomial endpoints in superiority, non-inferiority, and equivalence studies. (cytel.com)

Creative Organizational Design is not a testing service and does not administer assessments to applicants. (creativeorgdesign.com)

Whether it's Africa, Asia, or Western or Eastern Europe, you will have the opportunity to focus on the region or countries that interest you most, learning their language, and perhaps even spending a semester studying abroad. (princetonreview.com)

Power, sample size, and the detectable alternative hypothesis are interrelated. (wikipedia.org)
The program can generate graphs of the relationships between power, sample size and the detectable alternative hypothesis. (wikipedia.org)
The greatest intensities for microplastics were observed against the silver membrane filter, and inhalable microplastics were still detectable in a 24 h PM sample. (acs.org)

Telemedicine, or telehealth, includes telecommunication via a variety of platforms designed to enhance patient-centered health care. (annfammed.org)
The study conducted in three different areas in the North west of England was designed to, link health status to subsequent use of health care in a way which might be used for service planning and the allocation of resources, and to provide data to inform a long term programme examining the relationship between need and demand for primary care. (socresonline.org.uk)
The mixture of methodologies gave a broader understanding of the dynamics of health utilisation in the localities studied. (socresonline.org.uk)
Studies based on the Health Belief' and 'rational choice' models have examined the way in which individual characteristics and attitudes influence the use of services (e.g Rosenstock 1966 ) and studies based on the socio -behavioural model have examined predisposing, enabling and need factors to explain patterns of health care use ( Anderson 1995 ). (socresonline.org.uk)
A sample of the general population aged 20-44 yrs (male:female ratio 1:1) was randomly selected from the registry of the local health authority in each of three Italian centres (3,000 in Turin and Verona, 1,000 in Pavia). (ersjournals.com)
It was designed to provide national estimates of the health and nutritional status of the United States' civilian, noninstitutionalized population aged two months and older. (cdc.gov)
Moreover, due to the nature of the survey design, the delay between the initiation of the survey and the dissemination of the results was longer than 24 months, preventing the use of this information for timely public health action. (who.int)

Unfortunately, very few studies with these characteristics [ 17 ] are available. (ersjournals.com)

The study protocol ( https://osf.io/e3dfh/ ) and data analysis plan ( https://osf.io/sh5u7/ ) were pre-registered on the Open Science Framework. (biomedcentral.com)
The computational algorithm we develop involves simulating multiple data sets that are fit with Bayesian models using Gibbs sampling, and is executed by using WinBUGS in tandem with R. (oregonstate.edu)
Analytic studies of survey data. (routledge.com)
The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. (plos.org)
2009-05-13 New data for Part 13 were submitted by the principal investigators to correct the sample size. (umich.edu)
This release, Series 11 No. 4A, contains priority toxicant reference range study data. (cdc.gov)

Trials that accounted for clustering in the design and analysis were more likely to report ethics review. (bepress.com)
Analysis of a bulk sample of the dust collected by the baghouse assembly during this trial showed the presence of silicon, silica monoxide and the silica dioxide radicals which are indicators of freshly fractured quartz, a particularly hazardous form of RCS. (cdc.gov)

The founder of Logojoy, Dawson Whitfield, a logo design specialist, was inspired to create the platform due to the time-consuming nature of designing simple logos for small companies that do not require elaborate designs. (writingbros.com)

The majority of the studies included in these systematic reviews have been assessed as being of poor quality, with the Hollands et al. (biomedcentral.com)
Here, we present systematic experimental studies on the signal formation in gas-phase photoconductive sampling. (nature.com)

Alternative projections of mortality and disability by cause 1990-2020: Global Burden of Disease Study. (scielo.br)

Diseases1

Analytical, Diagnostic and Therapeutic Techniques and Equipment3

Phenomena and Processes1

Anthropology, Education, Sociology and Social Phenomena1

Information Science1

Health Care4

Geographicals1

Methods18

Cross-sectional7

Prevalence9

Analyses3

Findings5

Abstract1

Corresponding genome-wide as1

Conclusions1

Qualitative Study2

Sequential6

Clinical8

Cohort studies2

Inadequate2

Observational studies1

Exploratory2

Theoretical1

Variance2

Past decade2

Objective4

Estimation3

Outcomes5

Viet Nam2

Mendelian2

Controlled trials2

Size Calculations1

Conducted a prospective study2

Representative3

Magnitude1

Simpler2

Guidelines2

Epidemiological1

Research2

Enables2

Assessment2

Methodology1

Questionnaire1

Participants5

Practice1

Power calculations1

Rheumatoid arthritis1

Sizes4

Grown1

Method2

Surveillance2

Adoption2

Cluster3

Case6

Assess2

Continuous2

Cardiovascular1

Statistical2

19972

19931

Examines2

Endpoints1

Assessments1

Abroad1

Detectable3

Health7

Characteristics1

Data6

Analysis2

Small1

Systematic2

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