Prevalence of vitamin D deficiency in exclusively breastfed infants at Charoenkrung Pracharak Hospital

Table 2 Factors associated with hypovitaminosis D (vitamin D deficiency and vitamin D insufficiency) by univariate logistic regression and multivariate analysis (df = 1)

Univariate analysis	Hypovitaminosis D	Sufficiency	P value	Crude OR (95%CI)
Parametric
Infants
Male, n	27	33	0.028	2.52 (1.1-5.76)
Birth weight (kg)	3.11 ± 0.34	3.21 ± 0.37	0.170	0.46 (0.15-1.4)
Sun index (h/wk)	2.28 ± 2.14	1.84 ± 1.83	0.355	1.12 (0.89-1.39)
Mothers
Vitamin D supplement, n	10	32	0.020	0.36 (0.15-0.85)
Multivariate analysis
Parametric
Infants
Male, n			0.511	1.46 (0.47-4.49)
Birth weight (kg)			0.004	0.08 (0.01-0.45)
Mothers
Vitamin D supplement, n			0.109	1.28 (0.95-1.73)