Understanding the odds ratio and the relative risk.
Understanding the odds ratio and the relative risk.
复制标题
了解优势比和相对风险。
作者：
S. D. Simon
比值比和相对风险都比较了两组之间发生事件的相对可能性。相对风险更容易解释，并且与一般直觉一致。然而，有些设计只允许计算比值比。协变量调整对于比值比更容易。最后，优势比通过对结果测量的标签不变来避免歧义。该表总结了优势比和相对风险的优点和缺点。当阅读那些用比值比或相对风险来总结数据的研究时，要意识到这些方法的局限性。
Both the odds ratio and the relative risk compare the relative likelihood of an event occurring between two groups. The relative risk is easier to interpret and is consistent with general intuition. Some designs, however, allow only for the calculation of the odds ration. Covariate adjustment is easier for an odds ratio. Finally, the odds ratio avoids ambiguity by being invariant to lthe labeling of the outcome measure. The Table summarizes the advantages and disadvantages of the odds ratio and relative risk. Whe reading research that summarizes data using odds ratios, or relative risks, be aware of the limitations of booth of these measures.