AIM: to set up statistical methods for calculation of intensity of schistosome infection in residents in nationwide sampling survey of schistosomiasis.
目的：为全国血吸虫病抽样调查居民血吸虫感染度的总体参数建立统计学方法。
An understanding of sampling was fundamental to statistical literacy and sampling methods were the key of sampling.
对抽样知识的理解是统计素养的基础，而抽样方法是抽样知识的重要组成部分。
Methods Sampling interview, grouping comparison and multi factors statistical analysis are adopted.
方法抽样调查，分组对比，多因素统计分析。
Methods Sampling interview, grouping comparison and multi factors statistical analysis are adopted.
方法抽样调查，分组对比，多因素统计分析。
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