title: Improved exact confidence intervals for the odds ratio in two independent binomial samples.
abstract: For two independent binomial samples, the usual exact confidence interval for the odds ratio based on the conditional approach can be very conservative. Recently, Agresti and Min (2002) showed that the unconditional intervals are preferable to conditional intervals with small sample sizes. We use the unconditional approach to obtain a modified interval, which has shorter length, and its coverage probability is closer to and at least the nominal confidence coefficient.
authors.affiliation: Graduate Institute of Statistics, National Central University, Chung-Li 32054, Taiwan, R.O.C. yang@stat.ncu.edu.tw
authors.forename: Che-Yang
authors.initials: CY
authors.lastname: Lin
authors.forename: Ming-Chung
authors.initials: MC
authors.lastname: Yang
mesh_terms: D000465:Algorithms; D016010:Binomial Distribution; D001699:Biometry / Q000379:methods*; D003198:Computer Simulation; D016001:Confidence Intervals; D003627:Data Interpretation, Statistical; D016015:Logistic Models; D016017:Odds Ratio