Overview
Since coming to Duke as an intern in 1994 I have collaborated as a biostatistician and co-investigator at Duke on numerous observational and experimental studies involving behavior, psychosocial factors, health, and disease. The substantive topics have ranged across questions concerning exercise and depression, hypertension, weight loss, the genetics of stress and heart disease, sickle cell disease, to name a few. I am particularly interested in the issue of improving reproducibility and transparency in data analysis.
Current Appointments & Affiliations
Professor Emeritus in Psychiatry and Behavioral Sciences
·
2021 - Present
Psychiatry & Behavioral Sciences, Behavioral Medicine & Neurosciences,
Psychiatry & Behavioral Sciences
Recent Publications
Change in body image flexibility and correspondence with outcomes in a digital early intervention for eating disorders based on acceptance and commitment therapy.
Journal Article Body Image · March 2023 Body image flexibility (BIF) has been suggested as a transdiagnostic process of change in eating disorder (ED) interventions, but data remain sparse. The current study examined the relationship between BIF and treatment effects in a randomized controlled t ... Full text Link to item CiteSeasonality of Pediatric Mental Health Emergency Department Visits, School, and COVID-19.
Journal Article Pediatr Emerg Care · December 1, 2022 OBJECTIVES: The aim of this study was to explore how the academic calendar, and by extension school-year stressors, contributes to the seasonality of pediatric mental health emergency department (ED) visits. METHODS: The authors reviewed all pediatric ment ... Full text Open Access Link to item CiteConfounding, Mediation, Moderation, and General Considerations in Regression Modeling
Chapter · January 1, 2022 Although causation cannot be established solely by statistical methods, multivariable modeling can be a useful tool in illuminating hypotheses about causal processes. In the present chapter, we discuss several concepts that are vital to exploiting multivar ... Full text CiteRecent Grants
Facility and Web-based Approaches to Lifestyle Change in Resistant Hypertension
ResearchCo Investigator · Awarded by National Institutes of Health · 2014 - 2021Exploring the Role of Social Environments for the Prevention of Hypertension among Black Females with a History of Chonic Stress
FellowshipCollaborator · Awarded by National Institutes of Health · 2019 - 2020Biomarkers of Mental Stress Induced Myocardial Ischemia and CHD Prognosis
ResearchCo Investigator · Awarded by National Institutes of Health · 2014 - 2019View All Grants
Education, Training & Certifications
University of Kansas ·
1995
Ph.D.