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Journal of Chinese Integrative Medicine ›› 2011, Vol. 9 ›› Issue (5): 487-490.doi: 10.3736/jcim20110504

• Methodology • Previous Articles     Next Articles

Statistical concepts related to negative clinical results

Wei Chen1, Guo-hua Zheng2, Jian-ping Liu2()   

  1. 1. Center for Evidence-based Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
    2. Research Institute of Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, Fujian Province, China
  • Received:2011-03-01 Accepted:2011-03-11 Online:2011-05-20 Published:2011-05-15
  • Contact: Liu Jian-ping E-mail:jianping_l@hotmail.com

It is a trend that clinical researchers overemphasize on hypothesis testing and the P value. However, P value has some limitations in the presentation of study results. Power is a tool for study design and results explanation, especially for negative results. Confidence interval contains more information for clinical results than P value. P value, power, and 95% confidence interval should be provided in the clinical reports to facilitate the interpretation of the results.

Key words: negative results, P value, power, confidence interval

Figure 1

Information provided by confidence interval in statistical inference"

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