This article introduces the general concepts and methods of sample size estimation and testing power analysis. It focuses on parametric methods of sample size estimation, including sample size estimation of estimating the population mean and the population probability. It also provides estimation formulas and introduces how to realize sample size estimation manually and by SAS software.
Consulting Center of Biomedical Statistics, Academy of Military Medical Sciences, Beijing, China. lphu812@sina.com
Zhong Xi Yi Jie He Xue Bao. 2011 Oct 1; 9 (10): 1070-4.
AbstractThis article introduces the general concepts and methods of sample size estimation and testing power analysis. It focuses on parametric methods of sample size estimation, including sample size estimation of estimating the population mean and the population probability. It also provides estimation formulas and introduces how to realize sample size estimation manually and by SAS software.