Correlates of Internists' Practices in Caring for Patients with Elevated Serum Cholesterol

Brief, effective experience to increase first-year medical students' nutrition awareness

Background: Wellness is an important concept for medical students to learn, both for their own health and for their patients. Since nutrition is an essential part of one's wellness that can positively or negatively impact one's health, it is important for medical students to learn approaches to nutritional wellness. Studies have shown that physicians' nutrition attitudes and clinical practices are positively correlated with their dietary practices.Objective: Here, we describe a brief nutrition-based education experience for first-year students offered at the start of the medical school curriculum that is designed to increase their nutrition awareness.Design: The nutrition experience involved five components: 1) having students complete three 24-hour food recalls; 2) comparing their recalls to nutrient standards; 3) emphasizing strategies that include simple, nutritionally sound food choices and preparation; 4) surveying students on their implementation of personal healthy nutritional strategies; and 5) requesting future recommendations for modifying the educational experience.Results: Most students' diets did not meet the recommended dietary levels for several nutrients, and these deficiencies corresponded to specific food group inadequacies. Forty percent of the students responded to a three-month follow-up survey. Of these students, 46% implemented one of the presented strategies to improve their food intake. Most changes included the addition or deletion of a particular food. Seventy-three percent recommended repeating the program in the future.Conclusions: We demonstrate that a brief 2.5-hour nutrition wellness experience can increase nutrition awareness and promote dietary change in incoming medical students. Many felt that the experience was valuable and recommended offering a similar experience to future classes.

Barriers to evidence-based physiotherapy practice for stroke survivors in Ghana

Background

Physiotherapy has evolved over the years, and this has led to an increasing demand in using evidence as a basis for making clinical decisions because evidence-based interventions for stroke have been shown to be effective. However, the inability to carry out any of the evidence-based practice (EBP) processes may constitute a barrier to its application in practice.

Aim

To determine the barriers to EBP of physiotherapy services for stroke survivors in Ghana.

Methods

A cross-sectional study that involved 121 physiotherapists of the Ghana Physiotherapy Association providing services to stroke survivors. Physiotherapists completed a self-administered questionnaire. Logistic regressions were used to examine relationships between socio-demographic and practice characteristics of respondents and each practitioner factor. A logistic regression was used to identify the association between organisational characteristics and each organisational factor that facilitates EBP.

Results

Self-efficacy ratings for performing EBP were below 50% for critical appraisal of the literature and interpretation of statistics. All the participants stated that they had organisational challenges, which tend to affect the implementation of evidence-based physiotherapy practice for stroke. The five most reported barriers to updating knowledge on EBP included lack of organisational mandate (56.2%), insufficient time (46.3%), lack of information resources (43%), lack of understanding of statistics (35.5%) and lack of interest (33.1%).

Conclusion

Lack of adequate resources, lack of organisational support and low self-efficacy to perform EBP activities constitute barriers to implementing EBP for stroke survivors.

Clinical implications

Findings of the study reinforce the need to develop a supportive organisational infrastructure to increase research integration in physiotherapy practice.

Creation and validation of the evidence-based practice confidence scale for health care professionals

RATIONALE

Self-efficacy beliefs may provide a means to influence health care professionals' (HCPs) engagement in evidence-based practice (EBP) but no standardized measure of this construct exists.

OBJECTIVES

To create and evaluate the validity and comprehensibility of a scale measuring belief in ability to implement EBP, known as EBP self-efficacy, among HCPs.

METHODS

Items describing the steps of EBP outlined in the literature were generated. Fourteen content experts reviewed the scale for face and content validity. A purposive sample of 10 HCPs from medicine, nursing, physical and occupational therapy and speech language pathology provided feedback on the clarity and meaning of scale wording in telephone interviews.

RESULTS

Progressive refinement yielded an 11-item self-report scale. Each item describes an activity that is part of the process of implementing EBP, such as formulating a question to guide a literature search and asking your patient or client about his/her needs, values and treatment preferences. To complete the scale, HCPs rate their level of confidence on an 11-point scale ranging from 0% (no confidence) to 100% (completely confident) in their ability to perform each activity. Item-level responses are averaged to obtain a summary score that can range from 0% to 100%.

CONCLUSION

The newly created scale, named the EPIC (evidence-based practice confidence) scale, provides an opportunity to evaluate HCPs' beliefs in their ability to implement EBP and the effects of interventions on these beliefs. Psychometric evaluation of the test-retest reliability and construct validity of the scale is necessary prior to its widespread use.

Practitioner and organizational barriers to evidence-based practice of physical therapists for people with stroke

BACKGROUND AND PURPOSE

The purpose of this study was to identify practitioner barriers (education, attitudes and beliefs, interest and perceived role, and self-efficacy) and organizational barriers (perceived support and resources) to physical therapists' implementation of evidence-based practice (EBP) for people with stroke.

SUBJECTS

The participants were 270 physical therapists providing services to people with stroke in Ontario, Canada.

METHODS

A cross-sectional mail survey was conducted.

RESULTS

Only half of respondents had learned the foundations of EBP in their academic preparation or received training in searching or appraising research literature. Although 78% agreed that research findings are useful, 55% agreed that a divide exists between research and practice. Almost all respondents were interested in learning EBP skills; however, 50% indicated that physical therapists should not be responsible for conducting literature reviews. Average self-efficacy ratings were between 50% and 80% for searching and appraising the literature and below 50% for critically appraising psychometric properties and understanding statistical analyses. Despite Internet access at work for 80% of respondents, only 8% were given protected work time to search and appraise the literature.

DISCUSSION AND CONCLUSION

Lack of education, negative perceptions about research and physical therapists' role in EBP, and low self-efficacy to perform EBP activities represent barriers to implementing EBP for people with stroke that can be addressed through continuing education. Organizational provision of access to Web-based resources is likely insufficient to enhance research use by clinicians.

Personal and professional correlates of US medical students' vegetarianism

OBJECTIVE

To determine prevalence and correlates of US medical students' self-identification as vegetarians.

DESIGN

Medical students were anonymously surveyed via questionnaire three times: at freshmen orientation, orientation to wards, and during senior year.

SUBJECTS

Medical students in the Class of 2003 (n=1,849) at 15 US medical schools (response rate 80%).

OUTCOME MEASURES

We examined self-reported vegetarianism, abstinence from meat items on a food frequency questionnaire, and associations between students' vegetarianism and their health-related outcomes.

STATISTICAL ANALYSES

Bivariate associations were tested with chi(2) tests.

RESULTS

During medical school, 7.2% of students self-identified as vegetarians; this percentage declined over time. Those who were vegetarians for health reasons (66% of vegetarians) ate more fruits and vegetables than those who were vegetarians for nonhealth reasons (P=0.02). Vegetarians were more likely (P<0.01) than nonvegetarians to eat more fruits and vegetables (P=0.002); be women (P=0.009); be Hindu, Buddhist, or Seventh Day Adventist (P< or =0.0004); be politically liberal (P=0.007); have a body mass index < or =25 (P=0.008); or, as freshmen, to perceive nutrition counseling as highly relevant to their intended practices (P=0.007). Vegetarian students were no more likely to counsel patients about nutrition than were nonvegetarians.

CONCLUSIONS

Prevalence of vegetarianism was higher among US medical students than among other US adults, although the prevalence declined during medical school. Medical students and physicians with healthful personal practices are more likely to encourage such behaviors in their patients, although the specific nutrition habit of vegetarianism among medical students was unassociated with their nutrition counseling practices.

Predictors of nutrition counseling behaviors and attitudes in US medical students

BACKGROUND

Nutrition counseling by physicians can improve patients' dietary behaviors and is affected by physicians' nutrition practices and attitudes, such as the perceived relevance of nutrition counseling.

OBJECTIVE

The objective was to provide data on medical students' perceived relevance of nutrition counseling, reported frequency of nutrition counseling, and frequency of fruit and vegetable intakes.

DESIGN

Students (n = 2316) at 16 US medical schools were surveyed and tracked at freshmen orientation, at the time of orientation to wards, and in their senior year.

RESULTS

Freshmen students were more likely (72%) to find nutrition counseling highly relevant than were students at the time of ward orientation (61%) or during their senior year (46%; P for trend = 0.0003). Those intending to subspecialize had lower and declining perceptions of counseling relevance (P for trend = 0.0009), whereas the perceived relevance of counseling by primary care specialists remained high (P for trend = 0.5). Students were significantly more likely to find nutrition counseling highly relevant if they were female, consumed more fruit and vegetables, believed in primary prevention, had personal physicians who encouraged disease prevention, or intended to specialize in primary care. Only 19% of students believed that they had been extensively trained in nutrition counseling, and 17% of seniors reported that they frequently counseled their patients about nutrition. Students who consumed more fruit and vegetables, believed that they would be more credible if they ate a healthy diet, were not Asian or white, or intended to specialize in primary care counseled patients about nutrition more frequently. Medical students consumed an average of 3.0 fruit and vegetable servings/d, which declined over time.

CONCLUSIONS

The perceived relevance of nutrition counseling by US medical students declined throughout medical school, and students infrequently counseled their patients about nutrition. Interventions may be warranted to improve the professional nutritional practices of medical students.

Utility of a brief self-efficacy scale in clinical training program evaluation

Self-efficacy is often studied as a predictor of professional practice behaviors or as an outcome of clinical training, using brief scales with little validation. This study examines the utility of a brief self-efficacy scale in the evaluation of a clinical training program. Subjects were 119 registered dietitians who participated in diabetes training. Hypothesized relationships between self-efficacy ratings and indices of skill mastery, participation in training, and subsequent practice change were examined. Self-efficacy ratings after training correlated significantly with relevant prior experience (r = .4 and .29, p < .01) but not total experience and with knowledge post-test score (r = .21, p < .02). Self-efficacy for all 12 program objectives increased significantly after training. Post-training self-efficacy for two program objectives correlated significantly with self-reported successful practice changes related to those objectives (r = .4, p < .04 and r = .51, p < .01). The data suggest that brief self-efficacy assessments can contribute meaningfully to clinical training program evaluation.

Computer-assisted diabetes nutrition education increases knowledge and self-efficacy of medical students

Medical students and physicians need to improve their understanding of the role of nutrition and the multidisciplinary team in diabetes care. To assist in this learning, an interactive computer program was developed that focused on prescribing diets for patients with diabetes. Parallel 10-item knowledge tests and an 8-item self-efficacy scale were used to evaluate the efficacy of the computer program among 41 third-year medical students. Mean knowledge scores increased significantly after using the computer program. Posttest knowledge scores for the medical students approached the level achieved by general practice dietitians with no diabetes specialty training. Mean self-efficacy scores increased significantly. The mean time spent on the educational component of the program was under 30 minutes. Computer-assisted diabetes nutrition education proved to be an efficient and effective method for teaching basic nutrition competencies to medical students. This program is available on the World Wide Web (http:/(/)medicine.aecom.yu.edu/diabetes/DEC.htm ) and may be a useful means for providing basic diabetes nutrition education to primary healthcare providers from a variety of disciplines as well as for medical students.

Nutrition guidance by primary-care physicians: LISREL analysis improves understanding

BACKGROUND

When determinants of nutrition guidance practices for primary care physicians (PCPs) are identified, the key question remains: what is the mechanism of action? This knowledge is essential in order to understand how PCPs practice nutrition guidance.

METHODS

Mail questionnaires (result of focus-group discussions and in-depth interviews) were sent to a nationwide random sample of 1,000 PCPs in the Netherlands, who had been in practice for between 5 and 15 years (633 respondents). The mechanism of action of determinants of nutrition guidance practices of PCPs was identified by means of linear structural relationship analysis (LISREL) using a postulated model.

RESULTS

The postulated model on the mechanism of action was confirmed. The model demonstrates that nutrition guidance practices of PCPs are directly and significantly based on a few predisposing factors; driving forces and perceived barriers may act as significant intermediary variables. The predisposing factors, driving forces, and perceived barriers were identified.

CONCLUSION

Policies to improve nutrition guidance practices of PCPs may, in the future, benefit from a LISREL model analysis of determinants of these practices to become more effective. Using multiple regression analysis to ascertain the determinants of these practices could result in missing important predisposing factors and "hidden" intermediary factors and lead, therefore, to an incomplete understanding of the mechanism of action.

Nutrition assessment and counseling practices: attitudes and interests of primary care physicians

This survey examined the nutrition-related practices and office services of primary care physicians, and their preferred nutrition topics and educational methods. Respondents were 960 physicians from across the United States who were members of the Society of General Internal Medicine. A four-page mailed questionnaire with 21 items queried background information, nutrition-related clinical practices and office support systems, perceived self-efficacy for nutrition assessment and counseling, and nutrition-related educational preferences. Two-thirds of the respondents said they personally provided nutrition counseling. They reported moderate self-efficacy for nutrition counseling and lower confidence for using specific relapse prevention strategies. Greatest interest in further education related to chronic disease prevention and nutrition for the elderly, provided in convenient formats for practicing physicians.

Multiple factors affect dietitians' counseling practices for high blood cholesterol

OBJECTIVE

To examine the association of factors from social cognitive theory with dietitians' counseling practices for high blood cholesterol.

DESIGN

A cross-sectional mail survey of 1,500 dietitians that included a 67-item, specially designed questionnaire to collect data.

SUBJECTS

The sample comprised clinical dietitians and dietitians in consulting and private practice who were members of The American Dietetic Association and were practicing in Pennsylvania; Delaware; Washington, DC; Maryland; North Carolina; and Virginia (N = 1,500). Questionnaires were returned by 1,011 (67%) respondents; the 508 respondents (50%) who counseled adults for high blood cholesterol completed the entire questionnaire.

STATISTICAL ANALYSES PERFORMED

Statistical analyses proceeded in three steps: descriptive statistics on questionnaire items, calculation of composite index scores, and bivariate and multivariate analyses.

RESULTS

Of the key hypothesized factors, greater self-efficacy, higher levels of outcome efficacy, and greater adherence expectations significantly correlated with compliance-enhancing counseling practices. Outpatient dietitians used more compliance-enhancing counseling practices than did inpatient dietitians. Stepwise multiple regression analysis showed that the outpatient setting, a greater number of counseling sessions, follow-up counseling, and a charge to patients for counseling positively correlated with compliance-enhancing counseling practices.

APPLICATIONS

Recommendations suggested by the findings include structuring professional training and continuing education programs for dietitians to strengthen self-efficacy, providing more feedback to improve perceived outcome efficacy, and changing the organization of the delivery of nutrition counseling services for prevention to allow more outpatient counseling.

Management of high blood cholesterol by primary care physicians: diffusion of the National Cholesterol Education Program Adult Treatment Panel guidelines

OBJECTIVE

To study knowledge of and adherence to National Cholesterol Education Program Adult Treatment Panel (ATP) guidelines among primary care physicians.

DESIGN

Cross-sectional telephone survey.

SETTING

New York State primary care practitioners; survey conducted November 1988-January 1989.

PARTICIPANTS

Physicians in general practice, family practice, internal medicine without subspecialty, and cardiology who reported greater than or equal to 10 hours/week of clinical practice (n = 329; response rate = 63%).

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

While 84% of physicians had heard of the ATP guidelines, gaps in knowledge and inconsistencies between ATP recommendations and clinical practices were found. Although the ATP guidelines recommend six months of dietary therapy before starting drug treatment, 41% of physicians would initiate drug treatment for a healthy 40-year-old man with total cholesterol of 7.8 mmol/L (300 mg/dl) either at the initial visit or after one month of lipid-lowering diet. Multivariate analysis of a 24-item knowledge scale revealed that less knowledgeable physicians were more likely to be older, lack board certification, and have a specialty other than cardiology (p less than 0.01). Less knowledgeable physicians were also more likely to consider drug company literature and drug company representatives very useful sources of information about cholesterol (p = 0.02).

CONCLUSION

This study suggests that hard-to-reach physician groups may require special efforts to communicate consensus guidelines of major importance to clinical practice.