Objective To compare the balance of simple randomization, stratified blocked randomization and minimization.
目的比较简单随机化、中心分层区组随机化和最小化法的均衡性。
Methods: 80 valid patients were divided into the application therapy group and the control group by the simple randomization.
方法：选择合格冠心病心绞痛患者80例，运用简单随机方法，随机分为治疗组、对照组。
Methods 120 patients with AMI were divided in - to study group (60 cases) and regular treatment group (60 cases) by simple randomization.
方法将120名AMI患者随机分为对照组及试验组(每组60例)进行对照研究。
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