O'Hara J
Clin Otolaryngol. 2008 Apr;33(2):145-9. doi: 10.1111/j.1749-4486.2008.01668.x.
Sample size calculations are integral to project design. A description of the underlying theory behind them is set out. Required are the significance level, the power, the clinical difference and the standard deviation. Douglas Altman's nomogram is particularly useful for sample size calculations for comparing independent samples.
样本量计算是项目设计不可或缺的一部分。文中阐述了其背后的基础理论。所需的参数有显著性水平、检验效能、临床差异和标准差。道格拉斯·奥尔特曼的列线图对于比较独立样本的样本量计算特别有用。
