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Biomedical subjects

Fred Tudiver

Publications and source records attributed to Fred Tudiver.

14 recordsLinked to original sources
PubMed2006

Subclinical thyroid disorders and cognitive performance among adolescents in the United States.

BACKGROUND: Thyroid hormone plays a crucial role in the growth and function of the central nervous system. The purpose of the study was to examine the relationships between the status of subclinical thyroid conditions and cognition among adolescents in the United States. METHODS: Study sample included 1,327 adolescents 13 to 16 years old who participated in the Third National Health and Nutrition Examination Survey (NHANES III). Serum thyroxine (T4) and thyroid stimulating hormone (TSH) were measured and subclinical hypothyroidism, subclinical hyperthyroidism, and euthyroid groups were defined. Cognitive performance was assessed using the subscales of the Wide Range Achievement Test-Revised (WRAT-R) and the Wechsler Intelligence Scale for Children-Revised (WISC-R). The age-corrected scaled scores for arithmetic, reading, block design, and digit span were derived from the cognitive assessments. RESULTS: Subclinical hypothyroidism was found in 1.7% and subclinical hyperthyroidism was found in 2.3% of the adolescents. Cognitive assessment scores on average tended to be lower in adolescents with subclinical hyperthyroidism and higher in those with subclinical hypothyroidism than the score for the euthyroid group. Adolescents with subclinical hypothyroidism had significantly better scores in block design and reading than the euthyroid subjects even after adjustment for a number of variables including sex, age, and family income level. CONCLUSION: Subclinical hypothyroidism was associated with better performance in some areas of cognitive functions while subclinical hyperthyroidism could be a potential risk factor.

Adolescent↗
PubMed2006

Practice locations of graduates of family physician residency and nurse practitioner programs: considerations within the context of institutional culture and curricular innovation through Titles VII and VIII.

BACKGROUND: Studies have described the aggregate results of federal funding for health professions education at the national level, but analysis of the long-term impact of institutional participation in these programs has been limited. PURPOSE: To describe and assess federally supported curricular innovations at East Tennessee State University designed to promote family medicine and nurse practitioner graduate interest in rural and underserved populations. METHODS: Descriptive analysis of a survey to determine practice locations of nurse practitioner graduates (1992-2002) and graduates of 3 family medicine residencies (1978-2002). Graduates' (N = 656) practice locations were documented using specific federal designations relating to health professions shortages and rurality. RESULTS: Overall, 83% of family medicine residency and 80% of nurse practitioner graduates selected practice locations in areas with medically underserved or health professions shortage designations; 48% of family physicians and 38% of nurse practitioners were in rural areas. CONCLUSIONS: Graduates who study in an educational setting with a mission-driven commitment to rural and community health and who participate in curricular activities designed to increase their experience with rural and underserved populations choose, in high numbers, to care for these populations in their professional practice.

Appalachian Region↗
PubMed2005

Behavioral medicine in Russian family medicine.

The Russian Federation's recently adopted family medicine as a specialty, but with little or no training in psychosocial and behavioral issues, unlike many training programs in other countries. The purpose of this qualitative study was to explore the perceptions and experiences of Russian primary care physicians regarding the practice of behavioral medicine and psychosocial methods. Semi-structured in-depth interviews were conducted with ten Russian family physicians. Examination of key words, phrases, and concepts used by the physicians revealed five themes that physicians related to their incorporation of psychosocial/behavioral medicine methods: (1) factors limiting the practice of behavioral medicine (inadequate training; cultural barriers); (2) demand for behavioral medicine services; (3) patient-doctor issues related to behavioral medicine (e.g., communication); (4) physician's role strain; and (5) intuition and experience. These findings suggest that Russia's new family physicians would benefit from residency and post-graduate curricula in behavioral sciences, tailored to their unique needs.

Attitude of Health Personnel↗
PubMed2005

Patients' anxiety and expectations: how they influence family physicians' decisions to order cancer screening tests.

OBJECTIVE: To compare the influence of physicians' recommendations and patients' anxiety or expectations on the decision to order four cancer screening tests in clinical situations where guidelines were equivocal: screening for prostate cancer with prostate-specific antigen for men older than 50; breast cancer screening with mammography for women 40 to 49; colorectal cancer screening with fecal occult blood testing; and colorectal cancer screening with colonoscopy for patients older than 40. DESIGN: Cross-sectional mailed survey with clinical vignettes. SETTING: British Columbia, Alberta, Ontario, Quebec, and Prince Edward Island. PARTICIPANTS: Of 600 randomly selected family physicians in active practice approached, 351 responded, but 35 respondents were ineligible (response rate 62%). MAIN OUTCOME MEASURES: Decisions to order cancer screening tests, physicians' perceptions of recommendations, patients' anxiety about cancer, and patients' expectation to be tested. RESULTS: For all screening situations, physicians most likely to order the tests believed that routine screening with the test was recommended; physicians least likely to order tests believed routine screening was not. Patients' expectations or anxiety, however, markedly increased screening by physicians who did not believe that routine screening was recommended. In regression models, the interaction between physicians' recommendations and patients' anxiety or expectation was significant for all four screening tests. When patients had no anxiety or expectations, physicians' beliefs about screening strongly predicted test ordering. Physicians who believed routine screening was recommended ordered the test in most cases regardless of patient characteristics. But patients' anxiety or expectations markedly increased the probability that the test would be ordered. The probability of test ordering went from 0.28 to 0.54 for prostate-specific antigen (odds ratio [OR] = 1.9), from 0.15 to 0.44 for mammography (OR = 2.8), from 0.33 to 0.79 for fecal occult blood testing (OR = 2.4), and from 0.29 to 0.65 for colonoscopy (OR = 2.2). CONCLUSION: Differences in clinical judgment about recommended practice lead to practice variation, but physicians are also influenced by nonmedical factors, such as patients' anxiety and expectations of receiving tests. In terms of magnitude of influence, clinical judgment is more powerful than nonmedical patient factors, but patient factors are also powerful drivers of family physicians' decisions about cancer screening when practice guidelines are equivocal.

Adult↗
PubMed2004

Barriers to cancer screening by rural Appalachian primary care providers.

CONTEXT: Rural Appalachia has significantly higher overall cancer mortality compared with national rates, and lack of cancer screening is believed to be one of the contributing factors. Reducing the cancer disparity in this region must include strategies to address suboptimal cancer screening practices by rural Appalachian primary care providers (PCPs). PURPOSE: To identify and investigate barriers to recommending and/or performing cancer screening among rural Appalachian PCPs. METHODS: A semistructured focus group research design was used to elicit perceived barriers to recommending and/or performing cancer screening from 36 rural Appalachian PCPs (in 5 groups), including physicians, nurse practitioners, and a physician assistant. FINDINGS: Findings indicate that rural Appalachian PCPs may not be performing recommended cancer screenings for a number of reasons. Time constraints, conflicting guidelines, and perceptions that patients do not value prevention were reported barriers to cancer screening. The PCPs in this study expressed frustration in attempting to encourage cancer screening and cited patient factors such as socioeconomic status, Appalachian culture, and cancer fatalism as barriers to cancer screening. CONCLUSIONS: Rural Appalachian PCPs encounter various barriers, such as lack of time and multiple cancer screening guidelines, to incorporating cancer screening into their practice routine. The findings underscore the negative impact of some cultural factors on preventive care delivered by PCPs. Increased provider education is needed on how best to encourage cancer screening within a cultural context and should include clarification and understanding of current cancer screening guidelines.

Anecdotes as Topic↗
PubMed2002

What influences family physicians' cancer screening decisions when practice guidelines are unclear or conflicting?

OBJECTIVES: To determine (a) the respondents' perceptions of 4 unclear or conflicting cancer screening guidelines: prostate-specific antigen (PSA) for men over 50, mammography for women 40-49, colorectal screening by fecal occult blood testing (FOBT), and colonoscopy for patients over 40; and (b) the influence of various factors on the decision to order these tests. STUDY DESIGN: National Canadian mail survey of randomly selected family physicians. POPULATION: Family physicians in active practice (n=565) selected from rural and urban family medicine sites in 5 provinces representing the main regions in Canada. OUTCOME MEASURED: Agreement with guideline statements, and decision to order screening test in 6 clinical vignettes. RESULTS: Of 565 surveys mailed, 351 (62.1%) were returned. Most respondents agreed with the Canadian Task Force recommendations, and most believed that various guidelines for 3 of the 4 screens were conflicting (PSA 86.6%; mammography 67.5%; FOBT 62.4%). Patient anxiety about cancer, patient expectations of being tested, and a positive family history of cancer increased the odds that the 4 tests would be ordered. A good quality patient-MD relationship decreased the odds of ordering a mammogram. Screening decisions were also significantly influenced by the respondents' beliefs about whether screening was recommended and whether screening could cause more harm than good. A physician's sensitivity to his or her colleagues' practice influenced screening decisions regarding PSA and mammography. CONCLUSIONS: These results suggest a conceptual framework for understanding the determinants of screening behavior when guidelines are unclear or conflicting.

Adult↗
PubMed2002

Teaching evidence-based medicine skills through a residency-developed guideline.

Though many residencies have recognized the need for instruction in evidence-based medicine, the best way to teach these skills to resident physicians remains uncertain. We designed a curriculum intended to develop a resident-produced, evidence-based guideline for the care of patients with diabetes. Each resident was supervised going through the steps of evidence-based medicine: asking a clinical question, searching for the evidence to answer that question, appraising that evidence, and producing an evidence-based answer. These answers were then compiled into a guideline distributed in the residency practice. An evaluation of this curriculum using focus group and survey data showed that learners appreciated the skills and knowledge gained in devising guidelines in an evidence-based manner but were uncertain that their searches were complete. The clinical evaluation of the guideline implementation showed improvement in several clinical markers of diabetes care.

Curriculum↗
PubMedDate not supplied

Does enhancing partner support and interaction improve smoking cessation? A meta-analysis.

BACKGROUND: We wanted to determine whether an intervention to enhance partner support helps as an adjunct to a smoking cessation program. METHODS: We undertook a meta-analysis of English-language, randomized controlled trials of smoking cessation interventions through July 2002 using the following data sources: Cochrane Tobacco Addiction Group specialized register, Cochrane controlled trials register, CDC Tobacco Information and Prevention Database, MEDLINE, Cancer Lit, EMBASE, CINAHL, PsycINFO, ERIC, PsycLIT, Dissertation Abstracts, SSCI and HealthSTAR, with reviews of bibliographies of included articles. Included were trials that assessed a partner support component with a minimum follow-up of 6 months. The outcomes measured were abstinence and biochemical assessment at 6 to 9 months and more than 12 months after treatment. Partner Interaction Questionnaire scores were primary and secondary outcomes. RESULTS: Nine studies (31 articles) met inclusion criteria. Partner definition varied among studies. All studies included self-reported smoking cessation rates, but there was limited biochemical validation of abstinence. For self-reported abstinence at 6 to 9 months after treatment, the Peto odds ratio (OR) = 1.08 (95% confidence interval [CI], 0.81-1.44) and at 12 months Peto OR = 1.0 (95% CI, 0.75-1.34). Sensitivity analysis of studies using live-in, married, and equivalent-to-married partners found a higher odds ratio at 6 to 9 months after treatment, Peto OR = 1.64 (95% CI, 0.5-4.64). Sensitivity analysis of studies reporting significant increases in partner support found at 6 to 9 months after treatment Peto OR = 1.83 (95% CI, 0.9-3.47); and at 12 months Peto OR = 1.22 (95% CI, 0.67-2.23). CONCLUSIONS: Interventions to enhance partner support showed the most promise for clinical practice when implemented with live-in, married, and equivalent-to-married partners. Such interventions should focus on enhancing supportive behaviors, while minimizing behaviors critical of smoking.

Humans↗
PubMedDate not supplied

Exercise and restless legs syndrome: a randomized controlled trial.

BACKGROUND AND OBJECTIVES: Restless legs syndrome (RLS) is a common, underdiagnosed neurological movement disorder of undetermined etiology. The primary treatments for restless legs syndrome are pharmacological. To date, no randomized controlled trials have examined the effectiveness of an exercise program on the symptoms of RLS. METHODS: Study participants (N = 41) were randomized to either exercise or control groups. 28 participants (average age 53.7; 39% males) were available and willing to begin the 12-week trial. The exercise group was prescribed a conditioning program of aerobic and lower-body resistance training 3 days per week. Restless legs symptoms were assessed by the International RLS Study Group (IRLSSG) severity scale and an ordinal scale of RLS severity at the beginning of the trial, and at 3, 6, 9, and 12 weeks. RESULTS: Twenty-three participants completed the trial. At the end of the 12 weeks, the exercise group (N = 11) had a significant improvement in symptoms compared with the control group (N = 12) (P = .001 for the IRLSSG severity scale and P < .001 for the ordinal scale). CONCLUSIONS: The prescribed exercise program was effective in improving the symptoms of RLS.

Adult↗