Effect (ng/ml 25-hydroxyvitamin D)

CI

p Value

Group—TID: Control

−6.67

−9.22 to −4.13

<0.0001

Race—

African American: Caucasian

Other: Caucasian

−8.31

−7.89

−11.33 to −5.28

−11.85 to −3.92

<0.0001

Age (change from 1st quartile to 3rd quartile)

−1.60

−4.40 to 1.20**

Slope: 0.002

Non-linear: 0.002

Gender—Female: Male

−0.70

−2.78 to 1.37

0.51

BMI z-score (change from 1st quartile to 3rd quartile)

1.52

−2.28 to 3.26**

Slope: 0.005

Non-linear: 0.002

UV30* (per 1 unit increase)

0.61

0.26 to 0.96

0.0006

Multivitamin Supplementation

1.22

−1.69 to 4.14

0.41