Table III.

Predictors of respiratory events among children with serum vitamin D levels available (n = 279)

Reported severe chest infection before age 2 years
	OR (95% CI)	p
Age, years	1.02 (0.71–1.46)	0.92
Sex, female	0.72 (0.40–1.30)	0.27
BMI	1.06 (0.93–1.20)	0.39
Household crowding	1.32 (0.89–1.96)	0.17
Birth weight, per kg	1.31 (1.06–1.63)	0.01
Vitamin D
Insufficiency	0.97 (0.45–2.07)	0.93
Deficiency	1.44 (0.52–3.95)	0.48
Reported health centre visit for a respiratory problem in the past 12 months
	OR (95% CI)	p
Age, years	0.70 (0.52–0.96)	0.03
Sex, female	0.76 (0.46–1.26)	0.29
BMI	1.07 (0.95–1.20)	0.25
Ever breastfed	0.75 (0.43–1.28)	0.29
Vitamin D
Insufficiency	0.71 (0.38–1.35)	0.30
Deficiency	0.57 (0.23–1.46)	0.25

BMI, body mass index.