Table 2.

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

Variables	Unadjusted		Adjusted
	β	95 % CI	β	95 % CI
Serum 25(OH)D Category
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
Duration of Supplementation
(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
Gender
Female	Ref
Male	3.62	−4.33–11.59	4.52	−3.02–12.07
Migrant status
Non migrant	Ref
Migrant	4.70	−3.69–13.11	1.87	−6.60–10.35

*p < 0.05; ***p < 0.001