Nam J M
Biostatistics Branch, National Cancer Institute, Rockville, Maryland 20892-7368, USA.
Biometrics. 1998 Mar;54(1):331-6.
We derive the asymptotic power function of the score test for detecting a common relative risk greater than unity from multiple 2 x 2 tables and formulate methods of sample size determination for use when designing stratified prospective studies. The stratified score test is more efficient than the unstratified test when the latter is unbiased.
我们从多个2×2列联表中推导出用于检测大于1的共同相对风险的计分检验的渐近功效函数，并制定了在设计分层前瞻性研究时使用的样本量确定方法。当未分层检验无偏时，分层计分检验比未分层检验更有效。
