randomization method

基本解释

Method:Adopted randomization, positive medicine control of equal rank comparative clinical trial method.
方法本研究采用为随机、阳性药物对照的设计方法。
Methods: Divided the rats into treatment group, model group, sham operation group and normal group by sortition randomization method.
实验方法：将大鼠用抽签法随机分组，分为治疗组、模型组、假手术组和正常对照组。
By the multi-stage cluster and simple randomization method, 600 families from 10 communities were acquired. The data were gained by interview in person.
调查对象：用多阶段分层整群随机抽样的方法抽取金阊区10个社区共计600户居民家庭。