Fig. 2. Multivariable-adjusted mean serum 25-hydroxyvitamin D [25(OH)D] levels by sex and lifestyle factors (A-F). BMI, body mass index (kg/m2): underweight (< 18.5), normal (18.5-<23), overweight (23-<25), and obese (≥ 25). Multivariable-adjusted mean serum 25(OH)D levels were calculated via PROC GLM after adjustment for the variables in the figure and age, sex, body mass index (underweight/normal/overweight/obese), abdominal obesity (no/yes), physical activity (low/moderate/high), sedentary time (tertile), and sunlight exposure (< 30 min/d, ≥ 30 min/d). *P < 0.05 and †P < 0.01 with the leftmost category as a reference. Fig. 2. Multivariable-adjusted mean serum 25-hydroxyvitamin D [25(OH)D] levels by sex and lifestyle factors (A-F). BMI, body mass index (kg/m2): underweight (< 18.5), normal (18.5-<23), overweight (23-<25), and obese (≥ 25). Multivariable-adjusted mean serum 25(OH)D levels were calculated via PROC GLM after adjustment for the variables in the figure and age, sex . . . J Korean Med Sci. 2015 Aug;30(8):1110-1120. http://dx.doi.org/10.3346/jkms.2015.30.8.1110