外在效度

  • 网络External validity;Internal and External Validity;external variable
外在效度外在效度
  1. 硬膜外镇痛联合低剂量催产素催产可增加剖宫产率:一项对随机临床试验外在效度的研究

    Epidural analgesia associated with low-dose oxytocin augmentation increases cesarean births : A critical look at the external validity of randomized trials