Vitamin A deficiency and determinants of vitamin A status in Bangladeshi children and women: findings of a national survey.

Objective Using data from the national micronutrients survey 2011-2012, the present study explored the status of subclinical vitamin A nutrition and the underlying determinants in the Bangladeshi population. Design A nationwide cross-sectional study. Settings The survey covered 150 clusters; fifty in each of rural, urban and slum strata. Subjects Three population groups: (i) pre-school age children (6-59 months; PSAC); (ii) school age children (6-14 years; SAC); and (iii) non-pregnant non-lactating women (15-49 years; NPNLW). Results National prevalence of subclinical vitamin A deficiency was 20·5, 20·8 and 5·3 % in PSAC, SAC and NPNLW, respectively. Slum populations had higher prevalence compared with urban (PSAC: 38·1 v. 21·2 %, P 0·05 for differences in β between <3 months v. 3-6 months, 6-9 months and 9-12 months). Conclusions Prevalence of subclinical vitamin A deficiency was high in children in Bangladesh. Intakes of animal-source foods and leafy vegetables were associated with higher and lower retinol status, respectively. Increased food diversity through animal-source foods is required.