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此文讨论必须随机化的原因,以及不能采用其它分组方法的理由。下面两篇文章将说明单纯随机(即相当于掷硬币)和部分随机的程序。随机化临床试验仍然是比较各种治疗效果的可靠方法。(15)随机化的目的是什么? ——避免选择性偏性。
This article discusses the reasons why randomization must be made and the reasons why other grouping methods cannot be used. The next two articles will describe simple random (ie, equivalent to a coin toss) and partially random programs. Randomized clinical trials are still a reliable method for comparing the effects of various treatments. (15) What is the purpose of randomization? - Avoid selective bias.