Walter S D
Am J Epidemiol. 1977 Apr;105(4):387-97. doi: 10.1093/oxfordjournals.aje.a112395.
Methods are given for determining the relative risks which it is possible to demonstrate as statistically significant with given probability in prospective and retrospective studies of a particular size. Also considered is the ratio of the sample sizes in the two groups being compared which will provide the most precise estimate of relative risk for a given total sample size.
给出了在特定规模的前瞻性和回顾性研究中，以给定概率确定具有统计学显著性的相对风险的方法。还考虑了在给定总样本量的情况下，比较的两组样本量的比例，该比例将为相对风险提供最精确的估计。
