Table 4. Predicted means from multiple regression model and 95% CI.

Predicted serum 25OHD concentration and confidence intervals of specific demographic and clinical variables calculated based on the multiple linear regression model. The regression model was constructed on the log-transformed data and the resulting coefficients and confidence intervals were back-transformed to the original scale. Significant interactions were retained if they were significant at the 0.1 level.

Clinical & Demographic Characteristics	Predicted Mean 25OHD (ng/mL)	95% CI
African American with CD
overweight, female	9.6	(6.8 – 13.5)
normal weight, female	15.6	(13.0 – 18.8)
overweight, male	11.0	(7.5 – 16.2)
normal weight, male	17.9	(15.6 – 20.7)
Caucasian with CD
overweight, female	26.1	(19.8 – 34.5)
normal weight, female	27.5	(23.6 – 32.1)
overweight, male	19.0	(14.9 – 24.3)
normal weight, male	20.0	(17.4 – 23.0)