临床试验是评价一种新的治疗方法是否有效和安全的标准,同时又可对目前临床上所用的药物或疗法进行评价,从中选出治疗该病最有效的药物或疗法。序贯试验是临床试验中的一种,其优点是可以通过较少的样本得到可靠的结论,在评价临床药物或疗效方面有一定的优点。然而该法很少被临床采用,针对这一现象,从流行病学教学角度对该方法进行推广。 Clinical trials evaluate the effectiveness and safety of a new treatment and at the same time assess the current clinical use of drugs or therapies and select the most effective drug or therapy for the disease. Sequential testing is one of the clinical trials, the advantage of which is that reliable conclusions can be obtained with fewer samples and that there are certain advantages in evaluating clinical drugs or efficacy. However, this method is seldom used clinically. In view of this phenomenon, the method is popularized from the perspective of epidemiological teaching.