题目内容
在病例对照研究中，QR值与RR值较接近的条件为
2021-10-08
A.疾病发病率小于10%
B.因素暴露率小于10%
C.因素暴露率小于5%
D.疾病发病率小于5%
E.疾病患病率小于10%
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