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目的:分析部分贫困农村学生维生素A、维生素D营养状况。方法:在贵州省3个贫困县按照多阶段分层随机抽样方法,抽取540名学生,通过高效液相色谱法进行血清维生素A和维生素D水平检测。结果:血清维生素A均值为0.28±0.08μg/ml、维生素D均值为22.26±5.71 ng/ml;男女生间维生素A水平差异无统计学意义(t=0.39,P>0.05)、维生素D水平差异有统计学意义(t=7.38,P<0.05),不同年龄段血清维生素A、维生素D水平差异有统计学意义(F=20.42,P<0.05和F=20.42,P<0.05),随年龄增加血清维生素A缺乏率逐渐降低,血清维生素D缺乏率逐渐升高(2趋势=9.62,P<0.05和2趋势=9.98,P<0.05)。结论:农村学生血清维生素A属于中等缺乏,维生素D缺乏率较高,应当引起重视,采取合理措施来提高维生素D的水平。
Objective: To analyze the nutritional status of vitamin A and vitamin D in some poor rural students. Methods: 540 students were recruited in three poor counties in Guizhou Province according to the multi-stage stratified random sampling method. Serum vitamin A and vitamin D levels were detected by high performance liquid chromatography. Results: The average serum vitamin A level was 0.28 ± 0.08μg / ml and the mean vitamin D level was 22.26 ± 5.71 ng / ml. There was no significant difference between male and female vitamin A levels (t = 0.39, P> 0.05) (T = 7.38, P <0.05). The levels of serum vitamin A and vitamin D in different age groups were significantly different (F = 20.42, P <0.05 and F = 20.42, P <0.05) Serum vitamin A deficiency gradually decreased, serum vitamin D deficiency gradually increased (2 trend = 9.62, P <0.05 and 2 trend = 9.98, P <0.05). Conclusions: Serum vitamin A in rural students is moderately deficient with high vitamin D deficiency rate, so attention should be paid to take reasonable measures to improve the level of vitamin D.