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目的了解中国不同经济水平3～12岁儿童血浆维生素A(VA)的营养状况。方法从2002年中国居民营养与健康状况调查的6类地区,132个调查点的儿童血样中,每个年龄段随机抽取男女血样各6份,利用高效液相色谱法测定血浆VA含量。结果3～12岁儿童血浆维生素A含量在不同经济水平有明显差异,儿童VA营养状况与家庭经济水平密切相关。结论中国3～12岁儿童的血浆VA水平受到家庭经济水平的影响较大。
Objective To understand the nutritional status of plasma vitamin A (VA) in Chinese children aged 3 ~ 12 years with different economic levels. Methods Sixty-two samples of blood were collected from 6 regions of China in 2002 and 132 samples from each survey area. The plasma VA content was measured by HPLC. Results Plasma vitamin A levels in children aged 3 ~ 12 years were significantly different at different economic levels. The status of VA nutrition in children was closely related to the family economic status. Conclusion The plasma VA level in Chinese children aged 3 to 12 years is greatly influenced by the family economic level.