天水、兰州、榆中地区儿童智力低下情况的调查

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对天水、兰州、榆中三地区部分小学 1 6 781名儿童进行智力情况调查。结果显示 ,三地区儿童智力低下的患病率分别为 2 1 2‰ ,5 41‰和 1 2 0 1‰。男性患病人数占 6 0 36 % ,女性占 39 0 9% ,男女患病率之比为 1 2 6∶1 ,男性明显高于女性。乡村男性患病率为 7 0 9‰ ,市区学生患病率为 5 89‰ ,经统计学检验 (u >72 5 8) ,P <0 0 1。城乡学生患病差异明显 ,乡区高于城区。同时对弱智儿童进行病因分析。研究发现 ,先天及产前因素占 2 7 2 1 % ,产时因素占 2 0 5 9% ,出生后因素占 2 5 % ,社会文化落后及原因不明占 2 0 5 9%。并就研究结果提出几点建议 A total of 1 6 781 children in some primary schools in Tianshui, Lanzhou and Yuzhong were surveyed. The results showed that the prevalence of mental retardation among children in the three regions was respectively 2 1 2 ‰, 5 41 ‰ and 1 2 0 1 ‰. The prevalence of males accounted for 6 036%, females 39 0 9%, and the prevalence of males and females was 1 2 6:1, significantly higher in males than females. The prevalence rate of rural men was 709%, and the prevalence of urban students was 5 89 ‰, with a statistical test (u> 72 5 8), P <0.01. Significant differences between urban and rural students, rural areas than urban areas. At the same time the mentally handicapped children etiology analysis. The study found that congenital and prenatal factors accounted for 2721%, production factors accounted for 259%, postnatal factors accounted for 25%, social and cultural backwardness and unexplained accounts for 259%. And made some suggestions on the research results
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