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４６９名６～４８月儿童随机分为实验组和对照组，以探讨在维生素Ａ缺乏地区儿童中一年２次补充大剂量维生素Ａ（每次２０×１０￣４ＩＵＶ＿Ａ和４０ＩＵＶ＿Ｅ）对其生长发育的作用。１２个月的观察表明，实验组儿童体重增长速度明显高于对照组（Ｐ＜０．０１），从６～３６月龄儿童实验和对照组相差３００±６９ｇ至５０±６ｇ。３６月龄儿童实验组身高增长高于对照组（Ｐ＜０．０１），其余各年龄组间无明显差异（Ｐ＞０．０５），但实验组儿童有高于对照组的趋势。本实验结果提示，在维生素Ａ缺乏地区补充维生素Ａ可以改善儿童的生长发育水平，尤其是体重的增长。
469 children from 6 to 48 months were randomly divided into experimental group and control group to investigate the effect of vitamin A supplementation (20 × 10 ~ 4IUV_A and 40IUV_E) on growth and development in children with vitamin A deficiency effect. A 12-month observation showed that the rate of weight gain in the experimental group was significantly higher than that in the control group (P <0.01). The difference between the experimental group and the control group was 300 ± 69g to 50 ± 6g from 6 to 36 months old. The height growth of 36-month-old children in experiment group was higher than that in control group (P <0.01), but there was no significant difference among the other age groups (P> 0.05). However, the experimental group had higher tendency than control group. The results of this experiment suggest that vitamin A supplementation in areas lacking vitamin A can improve children’s growth and development, especially weight gain.