
Rachele Pojednic
· Other Teaching Faculty and StaffVerifiedStanford University · Human Biology
Active 2012–2024
Research topics
- Medicine
- Computer Science
- Medical education
- Demography
- Nursing
- Internal medicine
- Environmental health
- Family medicine
- Psychology
- Pedagogy
- Endocrinology
- Psychiatry
- Gerontology
Selected publications
Diabetes/Metabolism Research and Reviews · 2021 · 13 citations
1st authorCorresponding- Medicine
- Internal medicine
- Demography
AIM: To examine the association between vitamin D (25(OH)D) deficiency and risk of prediabetes in Americans 50+ years of age. MATERIALS AND METHODS: This was a cross-sectional analysis of NHANES (2007-2012) subjects aged 50+ years, free of kidney/liver diseases and diabetes. Prediabetes was defined as: HbA1c level 5.7%-6.4%, or fasting plasma glucose level 100-125 mg/dL, or Oral Glucose Tolerance Test result 140-199 mg/dL, with no laboratory value in the diabetic range. The comparison group had normal glucose tolerance (NGT) with no marker in the prediabetes/diabetes range. Total serum 25(OH)D levels were deficient at <50 nmol/L, insufficient 50-75 nmol/L, and sufficient >75 nmol/L. Logistic regression included strata, cluster and weight variables. Models were adjusted for body mass index (BMI), ethnicity, age and gender. RESULTS: The final sample was 2286 adults, predominantly White (80.4%) and female (56.6%), with a mean age of 62.3 years. Within the sample, 1387 had prediabetes (59.1%) and 899 were NGT (40.9%). Individuals classified within a lower serum vitamin D category were more likely to have prediabetes (p = 0.03). Those with 25(OH)D deficiency were more likely to have prediabetes compared to 25(OH)D sufficient individuals (crude OR = 1.48, 95% CI 1.15-1.91), and this association remained significant after adjustment for ethnicity, BMI, age and gender (aOR = 1.39, 95% CI 1.02-1.89). There was no effect modification by BMI, gender or ethnicity. CONCLUSIONS: Vitamin D status was associated with risk of prediabetes in this sample of Americans 50+ years of age. Future research should seek to understand the potential mechanistic relationship between vitamin D and prediabetes.
Teaching and Learning in Medicine · 2020 · 10 citations
Senior authorCorresponding- Computer Science
- Medical education
- Psychology
These findings highlight several key PA categories and topics that can serve as a foundation for a diverse number of health professional training programs.
Move It or Lose It: Summarizing Peer-reviewed Evidence for Practicing What You Preach
Current Sports Medicine Reports · 2020 · 1 citations
Senior authorCorresponding- Medicine
- Family medicine
- Nursing
Physically active health care providers are more likely to provide physical activity (PA) counseling to their patients, but barriers in PA counseling exist. Common barriers include knowledge, time constraints, lack of reimbursement, as well as lack of personal habits. This article will summarize evidence-based knowledge regarding provider PA habits as a means of improving rapport, compliance, and empathy for patients when prescribing PA. Clinical pearls for successful PA counseling scenarios also will be discussed.
Frequent coauthors
- 35 shared
Edward M. Phillips
- 22 shared
Lisa Ceglia
Tufts Medical Center
- 18 shared
Mary A. Kennedy
Edith Cowan University
- 15 shared
Bess Dawson‐Hughes
Tufts University
- 13 shared
Roger A. Fielding
Tufts University
- 11 shared
Rani Polak
Spaulding Rehabilitation Hospital
- 9 shared
Melissa McFarland
Simmons University
- 9 shared
Elizabeth Metallinos‐Katsaras
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