Analysis of vitamin A level and its influencing factors among students in monitoring area of nutritional health status of students in 2021
Objective To analyze the vitamin A levels and influencing factors among students in the monitoring areas of the Nutritional Improvement Program for Rural Compulsory Education Students in 2021.Methods Serum vitamin A concentration 0.2-0.3 μg/mL is defined as marginal vitamin A defi-ciency,＜0.2 μg/mL is defined as vitamin A deficiency,＞0.3 μg/mL is defined as vitamin A insuffi-cient.In the monitoring area of the Nutritional Improvement Program,questionnaire surveys,physical ex-aminations,and laboratory tests were conducted on primary and secondary school students aged 6-17 and their vitamin A levels and influencing factors were analyzed.Results Totally 45 702 primary and second-ary school students were included in this study.The average of serum vitamin A level was 0.37(0.31-0.44)μg/mL,the marginal deficiency rate was 18.3％,and the deficiency rate was 1.0％.Differences in vitamin A nutritional status were observed across different genders,ages,and school locations.Logistic regression model revealed that students aged 6-＜9 years(OR=3.892,95％CI:3.303-4.587,P＜0.001),whose schools are located in rural areas(OR=1.148,95％CI:1.072-1.229,P＜0.001),parents working outside(OR=1.234,95％CI:1.153-1.321,P＜O.001)and students with lower ma-ternal education levels(OR=1.169,95％CI:1.046-1.306,P=0.006),students who could not guar-antee to drink milk every day(OR=1.155,95％CI:1.075-1.240,P＜0.001)and consume less than 4 kinds of vegetables per day(OR=1.081,95％CI:1.006-1.163,P=0.034)have an increased risk of vitamin A deficiency.Conclusions The prevalence of marginal vitamin A deficiency among students in monitoring areas in 2021 was still high,especially among younger children.Maternal education level,in-take of milk and vegetables are potential influencing factors of vitamin A deficiency,which need to be paid attention to by all sectors of society.
Vitamin APrimary and middle school studentInfluencing factors
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