用某中草药预防流感,其用药组与对照组的流感发病率情况如下表 https://assets.asklib.com/psource/2015111910410184662.jpg 则构成四格表的四个基本数据是()

A . ['https://assets.asklib.com/psource/2015111910411570637.jpg B .https://assets.asklib.com/psource/2015111910412429622.jpg C .https://assets.asklib.com/psource/2015111910412931359.jpg D .https://assets.asklib.com/psource/2015111910413554749.jpg E .https://assets.asklib.com/psource/2015111910413994738.jpg

时间:2022-10-04 15:13:48 所属题库:卫生统计学题库

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