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本文介绍新药临床试验的病例数估计及其在实用中的重要性。病例数的多少会直接影响统计检验的功效与结论的假阳性及假阴性率。一个小的临床试验极易犯假阴性的错误,并阐明犯这类错误的危害性。
This article describes the clinical trial of new drug estimates of the number of cases and its importance in practice. The number of cases will directly affect the effectiveness of statistical tests and conclusions of the false positive and false negative rates. A small clinical trial is extremely prone to false-negative errors and illustrates the dangers of making such mistakes.