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目的了解北京郊区农村学生维生素A营养状况,为进一步开展营养干预提供科学依据。方法选取北京怀柔区、延庆县农村学校学生8~14岁517人,对其进行问卷调查及3日24小时膳食回顾调查,利用HPLC法检测血清维生素A水平。结果膳食中维生素A摄入量中位数为150.93μgRE/d(23.61%RNI),血清维生素A中位数为366.67μgRE/L,血清维生素A水平低于300μgRE/L者占19.34%。结论北京郊区农村学生维生素A营养状况低下。
Objective To understand the nutrition status of vitamin A in rural students in suburban Beijing and provide scientific basis for further nutritional intervention. Methods Five hundred and seventy-five school-age children aged 5 to 14 from rural schools in Huairou District of Yanqing County and Yanqing County were enrolled. Questionnaires and 24-hour dietary recalls on the 3rd were conducted. Serum vitamin A levels were measured by HPLC. Results The median dietary intake of vitamin A was 150.93μgRE / d (23.61% RNI), the median serum vitamin A was 366.67μgRE / L, and the serum vitamin A level was less than 300μgRE / L, accounting for 19.34%. Conclusion The vitamin A status of rural students in suburban Beijing is low.