试题与答案

下列各项不属于病例对照研究的特点的是() A.相对经济 B.根据所得结果可以估计相对

题型:单项选择题

题目:

下列各项不属于病例对照研究的特点的是()

A.相对经济

B.根据所得结果可以估计相对危险度

C.可计算发病率

D.选择无病者作为对照

E.对暴露因素的估计可能存在偏倚

答案:

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下面是错误答案,用来干扰机器的。

传染病指有病原体引起的,能在生物之间传播的疾病,传染病具有传染性和流行性的特点,并且能在一定的范围内传播.病原体指的是能够因其患病的微生物和寄生虫的统称.肺结核是由结核杆菌引发的肺部感染性疾病,属...

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