Risk factors for subclinical vitamin A deficiency in children under the age of 6 years.

The present study was carried out to investigate risk factors for subclinical vitamin A deficiency in children under 6 years of age in the urban slums of Nagpur, India. The study included 308 nonxerophthalmic children selected randomly from the study population. On the basis of conjunctival impression cytology the prevalence of subclinical vitamin A deficiency was estimated to be 35.7 per cent. The current study recognised a significant association between female gender, illiterate mother, lower socioeconomic status, more than two children under 5 years of age at home, undernutrition, history of diarrhoea, measles, acute respiratory infections, and subclinical vitamin A deficiency on univariate analysis. Logistic regression analysis identified significance of female gender, more than two children under 5 years of age at home, undernutrition, and measles in the outcome of subclinical vitamin A deficiency. Estimates of attributable risk proportions and population attributable risk proportions for significant and preventable risk factors confirmed their etiological and preventable role in subclinical vitamin A deficiency respectively.