Blinding status of respondents by group assignment at the end of the study.
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https://figshare.com/articles/dataset/_Blinding_status_of_respondents_by_group_assignment_at_the_end_of_the_study_/501719
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资源简介：
*N (%) - number of respondents and percentage in each group.
**192 (80%) households present at the time of interview and still in possession of the filter.
创建时间：
2010-09-10
