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Journal of Chinese Integrative Medicine: Volume 10, 2012   Issue 2,  Pages: 154-159

DOI: 10.3736/jcim20120205
Methodology
Estimation of sample size and testing power (Part 5)
1. Liang-ping Hu (Consulting Center of Biomedical Statistics, Academy of Military Medical Sciences, Beijing 100850, China E-mail: lphu812@sina.com)
2. Xiao-lei Bao (Consulting Center of Biomedical Statistics, Academy of Military Medical Sciences, Beijing 100850, China )
3. Xue Guan (Consulting Center of Biomedical Statistics, Academy of Military Medical Sciences, Beijing 100850, China )
4. Shi-guo Zhou (Consulting Center of Biomedical Statistics, Academy of Military Medical Sciences, Beijing 100850, China )
ABSTRACT: Estimation of sample size and testing power is an important component of research design. This article introduced methods for sample size and testing power estimation of difference test for quantitative and qualitative data with the single-group design, the paired design or the crossover design. To be specific, this article introduced formulas for sample size and testing power estimation of difference test for quantitative and qualitative data with the above three designs, the realization based on the formulas and the POWER procedure of SAS software and elaborated it with examples, which will benefit researchers for implementing the repetition principle.
KEYWORD: statistics, medical; research design; sample size; testing power; parametric estimation
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Please cite this article as:
Hu LP, Bao XL, Guan X, Zhou SG. Estimation of sample size and testing power (Part 5). J Chin Integr Med / Zhong Xi Yi Jie He Xue Bao. 2012; 10(2): 154-159.
References:
1Hu LP. The application of statistical triple-type theory in experimental designs[M]. Beijing: People’s Military Medical Press, 2006. 46, 48, 77. Chinese
2Hu LP. SAS research design and statistical analysis[M]. Beijing: People’s Medical Publishing House, 2010. 193, 219. Chinese
3Jin PH, Chen F. Medical statistics methods. 3rd ed[M]. Shanghai: Fudan University Press, 2009. 565. Chinese
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