Higgins J E, Wilkens L R
Am J Obstet Gynecol. 1985 Mar 1;151(5):656-9. doi: 10.1016/0002-9378(85)90158-9.
Statistical procedures for hypothesis testing and interval estimation of the difference in a pair of Pearl rates are presented. The p value of the test statistic is evaluated exactly from the binomial distribution or approximately from the standard normal distribution. Interval estimation is provided by the test-based method of Miettinen. The procedures are applied to two published data sets, and the conceptual link between the Pearl rate and life-table methods is discussed.
本文介绍了用于检验假设和估计一对珀尔率差异的区间估计的统计程序。检验统计量的p值可从二项分布精确计算得出，或从标准正态分布近似计算得出。区间估计由米耶蒂宁基于检验的方法提供。这些程序应用于两个已发表的数据集，并讨论了珀尔率与生命表方法之间的概念联系。
