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目的探讨引起儿童营养不良的因素。方法应用病例对照研究方法，对长沙市北区和西区１４所小学１～６年级筛选出来的２７３例营养不良学生的可疑病因进行了单因素分析（χ２检验、ｔ检验、相关分析）和多因素分析（逐步回归分析和Ｌｏｇｉｓｔｉｃ回归分析）。结果儿童营养不良的主要危险因素为：①遗传因素；②饮食习惯差（ＯＲ＝１０．１０，Ｐ＜０．０１）；③儿童兄弟姊姝数较多；④出生时低体重，早产或过期产。结论提示应根据主要危险因素尽早进行干预
Objective To explore the factors that cause malnutrition in children. Methods A case-control study was conducted to investigate the suspicious causes of 273 malnourished students screened from 14 primary schools in the north and west of Changsha City by univariate analysis (χ2 test, t test, correlation analysis) and multiple factors Analysis (Stepwise Regression Analysis and Logistic Regression Analysis). Results The main risk factors for malnutrition in children were: ① genetic factors; ② poor dietary habits (OR = 10.10, P <0.01); ③ more siblings of children and sisters; ④ low birth weight, premature birth or outdated Production. Conclusion suggests that intervention should be based on the main risk factors as soon as possible