Bailey B J
Biometrics. 1987 Mar;43(1):201-5.
For the problem of obtaining confidence limits to the risk ratio, or the ratio of two binomial probabilities, Katz et al. (1978, Biometrics 34, 469-474) proposed a method based on the logarithm of the observed ratio and using Fieller's result. We propose a method based on a power of the observed ratio, the power being chosen to minimize the skewness of the pivotal random variable. The method is simple to use and more stable than that of Katz et al. A continuity correction is suggested if a conservative interval is desired.
针对获取风险比（即两个二项概率之比）的置信限问题，卡茨等人（1978年，《生物统计学》34卷，469 - 474页）提出了一种基于观察到的比率的对数并使用菲勒结果的方法。我们提出了一种基于观察到的比率的幂的方法，该幂的选择是为了使枢轴随机变量的偏度最小化。该方法使用简单，并且比卡茨等人的方法更稳定。如果需要一个保守区间，则建议进行连续性校正。
