【摘要】 本文对上海某弱智学校60例智力低下儿童进行了配对病例——对照研究.使用条件 Logistic 回归进行多变量分析,9个因素中选出 x₁铅吸收;x₂出生时因素;x₄出生后因素;x₉阳性家族史为智力低下的4个危险因素。铅吸收因素的相对危险度为27.更多还原

【Abstract】 With conditional Logistic regressionanalysis,the risk factors in the occurrenceof mental retardation(MR)were assessed in60 MR children in a special school in Shang-hai,with 60 normal childrenas controls.Results of this matched pair analysis reveal-ed that MR was,and the controls was not,significantly correlated with the followingfour factors:lead absorption;birth complica-tions;postnatal factors;and positive familyhistory.The odds ratio of lead absorptionfactor to MR was 27.更多还原