Table 3.

Risk factors for children with VAD and low serum Vitamin A status (univariate analysis) (n = 357)

Variable	Odds ratio	95% confidence interval	P-value
Age (per unit increase in month)	0.76	0.38–1.07	< 0.001
Residential regions(urban vs rural)	4.65	1.52–8.74	< 0.001
Average education years of parents (per unit increase in year of education)	0.84	0.75–0.94	0.003
Oral administration of vitamin A capsule(no vs yes)	0.42	0.18–1.12	0.005