科研之友
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摘要
The statistical inference concerning the difference between two independent binominal proportions is often discussed in medical and statistical literature. However, such discussions are often based on the frequentist viewpoint rather than the Bayesian viewpoint. In this article, we propose an index theta = P(pi(1,post) %26gt; pi(2,post)), where pi(1,post) and pi(2,post) denote binominal proportions following posterior density. We provide approximate and exact expressions for theta by using the beta prior. We also present the results of actual clinical trials to show the utility of theta. Our findings suggest that theta can potentially provide useful information in a clinical trial.
- 出版日期2012
