Trial characteristics associated with use of PROs as primary or coprimary outcomes versus secondary outcomes only or not used.

Trial characteristics associated with use of PROs as primary or coprimary outcomes versus secondary outcomes only or not used.与使用患者报告结局（Patient-Reported Outcomes，PROs）作为主要或共同主要结局，相较于仅将其作为次要结局或未使用PROs的情况相关的临床试验特征。