Characteristics of 16 515 VITAL Participants Included in Biomarker Analysis by BMI at Study Baseline
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); CTSC, Clinical and Translational Science Center; MET, metabolic equivalent of tasks; VITAL, Vitamin D and Omega-3 Trial.Defined as the option indicated by participant with no further breakdown available.Mean (SD) serum 25-OHD level before the use of study pills was 30.6 (9.5) ng/mL and most levels (14 279 [87.5%]) were sufficient at 20.0 ng/mL or greater. Total 25-OHD levels were significantly lower among participants at higher BMI categories, even with adjustment for other factors associated with serum vitamin D levels (