Odds ratios and 95% confidence intervals for the association between serum 25(OH)D, DBP, and the 25(OH)D:DBP molar ratio and colorectal cancer risk in stratified models, ATBC Study.

Unconditional logistic regression was used for all models. OR = odds ratio; CI = confidence interval. 1Cut-points for season specific quartiles (nmol/L): winter = Q1: ≤18.3, Q2: >18.3–≤26.9, Q3: >26.9–≤42.0, Q4: >42.0; Summer = Q1: ≤27.0, Q2: >27.0 and ≤38.7, Q3: >38.7–≤53.4, Q4: >53.4. 2Model adjusted for matching factors of age at randomization and date of blood collection. 3Model adjusted for age at randomization, date of blood collection, years of smoking, serum α-tocopherol, serum β-carotene, serum retinol, BMI, height, and physical activity. 4Adjusted for same factors in model 2, with additional adjustment for quartiles of 25(OH)D or DBP.