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Journal of Chinese Integrative Medicine ›› 2011, Vol. 9 ›› Issue (10): 1070-1074.doi: 10.3736/jcim20111006

• Methodology • Previous Articles     Next Articles

Estimation of sample size and testing power (Part 1)

Liang-ping Hu(), Xiao-lei Bao, Shi-guo Zhou, Xue Guan    

  1. Consulting Center of Biomedical Statistics, Academy of Military Medical Sciences, Beijing 100850, China
  • Received:2011-08-12 Accepted:2011-08-15 Online:2011-10-20 Published:2011-10-15
  • Contact: Hu Liang-ping E-mail:lphu812@sina.com

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.

Key words: statistics, medical, research design, sample size, testing power, parametric estimation

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