Relative risk
RR is the most common measure for the association between esposure and outcome.The meaning is how many times the risk of exposed people is that of unexposed.
公卫百科
If RR=1 it means the risk in exposed group and unexposed group are equal ,there is no association between the exposure and the outcome.
公卫家园
If RR>1 it means the risk in exposed group is greater than the unexposed group,there is a positive association between the exposure and the outcome.
公卫家园
If RR<1 it means the risk in exposed group is less than the unexposed group,there is a negative association between the exposure and the outcome.
公卫考场
公卫家园
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