Table 3.

Stratified summary ORs for the association between vitamin D and colorectal adenoma

Vitamin D status, OR (95% CI)
LowHigh
Vitamin D intake
    All adenomas (n = 12)1.000.89 (0.78-1.02)
    Recurrent adenomas (n = 4)1.000.88 (0.72-1.07)
    Advanced adenomas (n = 4)1.000.77 (0.63-0.95)
Type of intake
    Dietary only (n = 7)1.000.90 (0.79-1.03)
    Supplements only (n = 4)1.001.0 (0.95-1.05)
    Total (dietary and supplements) (n = 9)1.000.89 (0.79-1.01)
Type of study
    Case-control (n = 5)1.000.86 (0.67-1.09)
    Cohort (n = 7)1.000.91 (0.76-1.08)
Sensitivity analysis
    Excluding Kampman men1.000.87 (0.77-0.98)
Circulating 25(OH)D
All adenomas (n = 7)1.000.70 (0.56-0.87)
Advanced adenomas (n = 2)1.000.64 (0.45-0.90)
Stratification by calcium
    Low calcium (n = 4)1.000.78 (0.54-1.12)
    High calcium (n = 4)1.000.67 (0.46-0.97)
Sensitivity analysis
    Excluding Peters ‘011.000.79 (0.69-0.91)
    Excluding Miller1.000.72 (0.58-0.91)
    Excluding Peters ‘01 and Miller1.000.81 (0.70-0.93)