Petrie A
Head of Biostatistics Unit, UCL Eastman Dental Institute, 256 Grays Inn Road, London, UK.
J Bone Joint Surg Br. 2010 Sep;92(9):1192-4. doi: 10.1302/0301-620X.92B9.25069.
In comparing or assessing methods of treatment it is vital that the appropriate number of patients is selected in order to ensure that the conclusions drawn are statistically viable. This annotation describes the relevance of a statistical power analysis in the context of hypothesis testing to the determination of the optimal sample size of a study. The power of the test indicates how likely it is that the test will correctly produce a statistically significant result.
在比较或评估治疗方法时，至关重要的是选择适当数量的患者，以确保得出的结论在统计学上是可行的。本注释描述了在假设检验背景下统计功效分析对于确定研究最佳样本量的相关性。检验的功效表明该检验正确产生具有统计学显著性结果的可能性有多大。
