Estimation of sample size and testing power (Part 1).
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
Liang-ping
LP
Hu
Xiao-lei
XL
Bao
Shi-guo
SG
Zhou
Xue
X
Guan
Hai-liang
HL
Xin
D003627:Data Interpretation, Statistical; D015233:Models, Statistical; D011336:Probability; D012107:Research Design; D018401:Sample Size; D012984:Software