Such discoveries have enhanced researchers’ ability to enrich study populations with patients who are likely to benefit from the drug, while sparing from any possible side effects of exposure those patients who are unlikely to benefit. Enrichment thus enables researchers to strengthen clinical trials’ “statistical power,” that is, the probability of detecting differences, if any exist, between study groups.
上述发现让科研人员可以选择取得疗效机率更大的患者进入到研究小组，同时避免让可能疗效不佳的患者出现副作用。科研人员借此强化了临床试验的“统计能力”，也就是了解不同实验组之间的差异概率。