世界健康调查项目中国预调查抽样效度分析

Sampling validity analysis on World Health Survey-China pilot study

摘要:
目的评估世界健康调查(WHS)中国预调查样本的代表性.
方法运用相异指数、样本-总体偏离指数、Myer指数和基尼集中比等指标对WHS中国预调查的家庭样本和个体调查对象样本的抽样效度进行分析.
结果从家庭人口的构成上看, 家庭样本具有很好的代表性.从性别和年龄构成上来看, 个体调查对象样本与总体十分接近, 但存在着低年龄段抽样不足、高年龄段过度抽样的现象.
结论 WHS中国预调查的抽样方法具有较好的抽样效度, 通过该方法获得的样本信息能够反映总体特征.

Abstract:
Objective To assess the representativeness of China pilot study smples of world health survey(WHS).
Methods Dissimilarity index, sample-population deviation index, Myer index and Gini concentration ratio were used to nalyze the sampling validity of household and individual samples in WHSChina pilot study.
Results In accor ding to the construction of household size showed appropriate repr esentativeness.Though individual samples were close to populationon age and sexcharacter istic, under-sampling and ove-rsampling existed in lower age group and upper age group separately.
Conclusion The sampling method in WHSChina pilot tudy shows a sufficient sampling validity, and the samples generated by this method can represent the characteristics of the population.