Table 2 Multiple linear regression for the predictors of mean serum 25OHD difference following vitamin D supplementation

 50-75 nmol/L

Ref

 25-49 nmol/L

11.83*

0.48–23.39

12.73*

1.16–4.30

 Below 25 nmol/L

28.43***

16.88–39.98

28.40***

16.73–40.08

 (Months)

−1.45*

−2.62–-0.29

−1.18*

−2.29–-0.06

 Age (years)

−0.016

−0.26–0.22

0.09

−0.15–0.33

 Female

Ref

 Male

3.62

−4.33–11.59

4.52

−3.02–12.07

 Non migrant

Ref

 Migrant

4.70

−3.69–13.11

1.87

−6.60–10.35