[Vitamin A and vitamin D nutritional status among children and adolescents aged 6-17 years in Jiangsu Province during 2016-2017].

OBJECTIVE:This study aimed to investigate vitamin A and vitamin D conditions and related factors among children and adolescents aged 6-17 years in Jiangsu Province of China. METHODS:All the data were derived from China Nutrition and Health Surveillance of Children and Lactating Mothers in 2016-2017. By applying multiple stage stratified cluster random sampling method, 3244 children aged 6-17 years were selected from 12 survey sites in Jiangsu Province. Face to face interview, physical measurements and 6 mL blood sample were used to collect the general information, anthropometric information and blood nutritional indexes of the participants. Multivariate Logistic analysis was used for vitamin A and vitamin D conditions to test related factors. RESULTS:The prevalence of vitamin A deficiency and marginal deficiency was 0.8% and 15.8%, respectively.23.2% of the participants had vitamin D deficiency, 54.2% had vitamin D insufficiency and 4.8% had vitamin A insufficiency combined with vitamin D deficiency. Age group, weight levels, screen time and mother's education levels are the relevant factors of vitamin A insufficiency in children and adolescents. The related factors of vitamin D deficiency among children and adolescents are gender, age group, residence, physical activity level, screen time and mother's education levels. Gender, residence, weight levels, screen time and mother's education levels are the related factors of vitamin A insufficiency combined with vitamin D deficiency. CONCLUSION:Vitamin A insufficiency and vitamin D deficiency are at high epidemic levels among children and adolescents in Jiangsu Province in 2016-2017.