临床试验中最常见的设计是平行组设计和交叉设计。
The most common designs in clinical trial are parallel design and cross over design.
方法采取平行组设计、分层随机、双盲、多中心临床试验方法。
Methods parallel group, stratified randomization, double blinded, muti-center clinical trail was designed.
方法：采用随机、双盲、安慰剂平行组对照、剂量反应研究设计和优效性检验。
METHODS: Cortex fraxini total coumarin was involved in a randomized, double-blind, placebo parallel control, dosage-reaction design and superiority test.
应用推荐