Selected article for: "public health and sample size"

Author: Sun, Mei; Xu, Ningze; Li, Chengyue; Wu, Dan; Zou, Jiatong; Wang, Ying; Luo, Li; Yu, Mingzhu; Zhang, Yu; Wang, Hua; Shi, Peiwu; Chen, Zheng; Wang, Jian; Lu, Yueliang; Li, Qi; Wang, Xinhua; Bi, Zhenqiang; Fan, Ming; Fu, Liping; Yu, Jingjin; Hao, Mo
Title: The public health emergency management system in China: trends from 2002 to 2012
  • Document date: 2018_4_11
  • ID: 1s1e6457_7
    Snippet: The survey methods have previously been published [14] . Briefly, we conducted two rounds of cross-sectional surveys in 2006 and 2013. The two surveys were retrospective and selected the same agencies in the two rounds. The survey of 2006 collected the data from 2002 to 2005, and the survey of 2013 collected data of 2012. We conducted a multistage sampling to select CDCs at different administration levels, selected all 32 provincial CDCs and used.....
    Document: The survey methods have previously been published [14] . Briefly, we conducted two rounds of cross-sectional surveys in 2006 and 2013. The two surveys were retrospective and selected the same agencies in the two rounds. The survey of 2006 collected the data from 2002 to 2005, and the survey of 2013 collected data of 2012. We conducted a multistage sampling to select CDCs at different administration levels, selected all 32 provincial CDCs and used systematic random sampling to select municipal and county CDCs. As governmental funding is the most critical control point of public health emergency management for the CDCs [15] ,we used "governmental funding to CDCs per thousand people" as a basis to determine sample size [16] . A sample size of 123 municipal and 457 county CDCs was calculated based on the following formula [17] .

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