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Statistical controversies in clinical research: scientific and ethical problems with adaptive randomization in comparative clinical trials

机译:临床研究中的统计争议:比较临床试验中采用自适应随机化的科学和伦理问题

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摘要

BackgroundIn recent years, various outcome adaptive randomization (AR) methods have been used to conduct comparative clinical trials. Rather than randomizing patients equally between treatments, outcome AR uses the accumulating data to unbalance the randomization probabilities in favor of the treatment arm that currently is superior empirically. This is motivated by the idea that, on average, more patients in the trial will be given the treatment that is truly superior, so AR is ethically more desirable than equal randomization. AR remains controversial, however, and some of its properties are not well understood by the clinical trials community.
机译:背景技术近年来,各种结果适应性随机化(AR)方法已用于进行比较性临床试验。结局AR不是使用两次治疗之间平均分配患者,而是使用累积数据来使随机概率失衡,从而有利于目前经验上优越的治疗组。这是因为这样的想法:平均而言,试验中将有更多患者获得真正优越的治疗,因此从伦理上讲,AR比同等随机化更为可取。但是,AR仍存在争议,并且其某些特性尚未为临床试验界所很好地理解。

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