The subject choice, randomized method, blind method, intra-group comparison, sample, compliance, statistical method, therapeutic effect assessment index, survey and side effects were observed.
调查内容包括研究对象选择、随机化方法、盲法、组间可比性、样本大小、依从性、统计学处理、疗效评价指标、随访和不良事件观察等。
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