Barriers to the participation of African-American patients with cancer in clinical trials: a pilot study.
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BACKGROUND: African-American patients have been under-represented in oncology clinical trials. Better understanding barriers to African-American participation may help increase the accrual of African-American patients onto clinical trials. METHODS: Two hundred eighteen patients with malignant disease (72 African-American patients and 146 white patients) were recruited from the Duke Cancer Clinic and from Duke Oncology Outreach Clinics (DOORS). Patients were interviewed using a standardized survey. Questions included patients' knowledge of cancer, religious/spiritual beliefs, satisfaction with medical care, knowledge of clinical trials, reasons for participating or refusing to participate in a clinical trial, financial/transportation issues, and demographic factors, such as age and education. Data on attitudes and belief were analyzed for group differences between African-American patients and white patients as well as between patients who were treated at the Duke Cancer Clinic and patients who were treated at DOORS clinics. RESULTS: Willingness to participate in a clinical trial depended on both race and clinic site. Forty-five percent of white patients, compared with 31% of African-American patients, were willing to participate in a clinical trial (P = 0.05). white and African-American patients who were treated at the Duke Cancer Clinic were more willing to participate in a trial compared with their counterparts who were treated at DOORS clinics (47% vs. 37%, respectively; P = 0.09). The greatest differences between groups (African-American patients vs. white patients and Duke Cancer Clinic patients vs. DOORS patients) were education and income: Much greater percentages of African-American patients and DOORS patients did not complete high school and had annual incomes < $15,000. In addition, more African-American patients than white patients believed that God would determine whether they would be cured or would die from their disease. In a multivariate analysis, education, income, and belief that God would determine the patient's outcome also were correlated with a decreased willingness to participate in clinical trials. CONCLUSIONS: Factors associated with religion, education, and income, rather than race, may be major barriers to clinical trial participation. Interventions that target education and income may increase the recruitment of African-American oncology patients onto clinical trials. (+info)
At issue: management of medication noncompliance in schizophrenia by families in India.
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Noncompliance with medication during a symptomatic phase is a common problem in the treatment of schizophrenia patients. In India, a majority of patients live with their families and those families supervise patients' medication intake. In a study of patients attending an urban outpatient care center in India, it was noted that when the patients were acutely ill and refused to take medication, the families administered medication to them without patients' knowledge, under the supervision of the psychiatrist. This method had been practiced by families in half the cases of patient noncompliance. Many families felt that there was no other viable alternative under the circumstances. Only a minority of patients was aware of having received medication through this method, and many of them reacted negatively to it. However, the patients were subsequently taking treatment voluntarily following the reduction in the severity of the behavioral disorder with the involuntary treatment. The issues involved in this form of treatment are discussed with regard to the social and health care environment in the country. (+info)
Knowledge systems for sustainable development.
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The challenge of meeting human development needs while protecting the earth's life support systems confronts scientists, technologists, policy makers, and communities from local to global levels. Many believe that science and technology (S&T) must play a more central role in sustainable development, yet little systematic scholarship exists on how to create institutions that effectively harness S&T for sustainability. This study suggests that efforts to mobilize S&T for sustainability are more likely to be effective when they manage boundaries between knowledge and action in ways that simultaneously enhance the salience, credibility, and legitimacy of the information they produce. Effective systems apply a variety of institutional mechanisms that facilitate communication, translation and mediation across boundaries. (+info)
Labelling and patient knowledge of dispensed drugs as quality indicators in primary care in Botswana.
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OBJECTIVES: To assess the quality of dispensing and patient knowledge of drugs dispensed in primary care in Botswana. SETTING: Thirty randomly assigned primary healthcare facilities in three districts of Botswana. PARTICIPANTS: Patients visiting clinics and health posts. DESIGN: Analysis of data from prospective participative observations of the drug dispensing process and interview of patients about their knowledge of drugs received immediately after dispensing. The quality of drug labelling was assessed by calculating mean labelling scores composed of five dispensing attributes: name of patient, and name, strength, dosage, and volume of the drug (incorrect or no labelling=0, 1 point for each correct labelling attribute; maximum score=5). Mean knowledge scores were obtained immediately after dispensing from patient recall of name and dosage of drug, duration of treatment, and reason for prescription (incorrect recall=0, 1 point for each correct recall attribute; maximum score=4). RESULTS: 2994 consecutive patient consultations were analysed. The mean labelling score was 2.75. Family welfare educators and pharmacy technicians scored highest (3.15 and 2.98, respectively) and untrained staff lowest (2.60). Factors independently associated with the labelling score were analgesics v other drugs, district, health posts v clinics, education of prescriber (nurse best), and years of experience of prescriber (4-11 years best). The mean patient knowledge score was 2.50. The reason for prescription of the drug(s), dosage, duration of treatment, and name of the drug(s) was recalled by 92%, 83%, 44%, and 31% of patients, respectively. The qualification level of the dispenser was the strongest factor independently associated with the knowledge score. Antibiotics had the second lowest score, both for labelling (2.39) and patient knowledge (2.39). CONCLUSION: Only trained dispensing staff provided satisfactory quality of labelling. Patients had a fair knowledge of the drugs dispensed. The knowledge of drugs dispensed by family welfare educators was less than satisfactory. The labelling score is a useful indicator of the quality of dispensing, and the knowledge score of both the quality of prescribing and of dispensing. These indicators should be added to the WHO list of patient care indicators. (+info)
Abstraction and context in concept representation.
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This paper develops the notion of abstraction in the context of the psychology of concepts, and discusses its relation to context dependence in knowledge representation. Three general approaches to modelling conceptual knowledge from the domain of cognitive psychology are discussed, which serve to illustrate a theoretical dimension of increasing levels of abstraction. (+info)
Auditory and action semantic features activate sensory-specific perceptual brain regions.
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Traditionally, concepts were considered propositional, amodal, and verbal in nature (for review, see ). Recent findings, however, suggest that conceptual knowledge is divisible into different types (L. Wu and L.W. Barsalou, personal communication, ) and that each type may be linked to specific sensory and motor processes. This implies that sensory processing regions of the brain may also process concepts. In fact, there is some neuroimaging evidence that conceptual information does activate perceptual brain regions and that there is a correspondence between knowledge type and the region being activated. In the following experiment, using a training technique developed in previous studies, participants verbally learned associations between novel objects and conceptual features. The objective was to create objects that were associated with features from only one knowledge type, something that does not occur with common objects. During a visual task that did not require retrieval of learned associations, the superior temporal gyrus, which responds well to sounds, was preferentially activated by objects associated with auditory features (e.g., buzzes). Likewise, the posterior superior temporal sulcus, which responds well to motion, was preferentially activated by objects associated with "action" features (e.g., hops). These findings support the theory that knowledge is grounded in perception. (+info)
Case scenarios to assess Australian general practitioners' understanding of stroke diagnosis, management, and prevention.
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BACKGROUND AND PURPOSE: Stroke represents the third-leading cause of death in Western society. Prompt and appropriate intervention for those with stroke or at risk of stroke is highly dependent on general practitioners' (GPs') knowledge and referral practices. METHODS: We randomly selected 490 eligible GPs from New South Wales, Australia, to complete our self-administered questionnaire. Case scenarios were used to assess GPs' knowledge of transient ischemic attack/ stroke risk factors, stroke prevention strategies, and management of asymptomatic and symptomatic patients. RESULTS: We received 296 completed questionnaires (60% response rate). Nearly all GPs (286, 96.6%) strongly agreed or agreed that stroke is a medical emergency. Most were aware that management by multidisciplinary teams improves outcomes (strongly agree or agree, 279; 94.3%). GPs endorsed the effectiveness of aspirin and warfarin in reducing stroke morbidity. GPs also were aware of the benefit of carotid endarterectomy (CEA) for symptomatic patients with >80% carotid stenosis but were less aware of the value of CEA for symptomatic patients with moderate stenosis. Vascular surgeon was the specialist of choice for referral of patients with high-grade carotid stenosis. Few GPs reported having seen the Cochrane Collaboration reviews of CEA for symptomatic (3.0%) and asymptomatic (1.7%) patients. CONCLUSIONS: GPs were well apprised of the evidence to support CEA for symptomatic patients with high-grade carotid stenosis. Our findings, however, invite more purposeful and effective education of GPs about stroke prevention, diagnosis, and management if optimal outcomes are to be realized. (+info)
Computational knowledge integration in biopharmaceutical research.
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An initiative to increase biopharmaceutical research productivity by capturing, sharing and computationally integrating proprietary scientific discoveries with public knowledge is described. This initiative involves both organisational process change and multiple interoperating software systems. The software components rely on mutually supporting integration techniques. These include a richly structured ontology, statistical analysis of experimental data against stored conclusions, natural language processing of public literature, secure document repositories with lightweight metadata, web services integration, enterprise web portals and relational databases. This approach has already begun to increase scientific productivity in our enterprise by creating an organisational memory (OM) of internal research findings, accessible on the web. Through bringing together these components it has also been possible to construct a very large and expanding repository of biological pathway information linked to this repository of findings which is extremely useful in analysis of DNA microarray data. This repository, in turn, enables our research paradigm to be shifted towards more comprehensive systems-based understandings of drug action. (+info)