Breaking free of sample size dogma to perform innovative translational research.

Breaking free of sample size dogma to perform innovative translational research.
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DOI:
10.1126/scitranslmed.3001628
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发表时间:
2011-06-15
影响因子:
17.1
通讯作者:
McCune JM
McCune JM
中科院分区:
医学1区
文献类型:
--
作者:
Bacchetti P;Deeks SG;McCune JM

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创新的临床和转化研究经常被推迟或阻碍,因为审稿人期望任何在人类身上进行的研究都必须提前证明具有高统计能力。这种假设的要求是不合理的,并且与样本量增加会导致边际收益递减的现实相矛盾。出于成本和可行性方面的考虑,对新想法的研究通常必须从小规模开始(有时甚至 N 为 1),而最近的统计工作表明,与较大样本量相比,此类研究的小样本量每花费一美元可以产生更多的预计科学价值。放弃关于样本量的错误教条将消除创新和转化的严重障碍。
Innovative clinical and translational research is often delayed or prevented by reviewers’ expectations that any study performed in humans must be shown in advance to have high statistical power. This supposed requirement is not justifiable and is contradicted by the reality that increasing sample size produces diminishing marginal returns. Studies of new ideas often must start small (sometimes even with an N of 1) because of cost and feasibility concerns, and recent statistical work shows that small sample sizes for such research can produce more projected scientific value per dollar spent than larger sample sizes. Renouncing false dogma about sample size would remove a serious barrier to innovation and translation.
DOI: 10.1097/00001648-199001000-00010
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