• Implementation of international society guidelines on chorionicity determination in twins: A multi-Center cohort study in mainland China 

      Wu, Su-Wen; Zhou, Qiongjie; Xiao, Xirong; Xiong, Yu; Liang, Huan; Shen, Jie; Barrett, Jon; Wang, Hong; Li, Xiao-Tian (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-02)
      Objective: Ultrasound determination of chorionicity is poor in early pregnancy in China. In an effort to increase the accuracy rate of prompt chorionicity determination, clinical training was provided to primary care physicians. This study assesses the effects of implementing clinical guidelines on chorionicity determination.<p> <p>Methods: A multi‑centered cohort study was conducted between ...
    • Optimized cutoff maternal age for adverse obstetrical outcomes: A multicenter retrospective cohort study in Urban China during 2011 to 2012 

      Zhang, Xiaolei; Liang, Huan; Zhao, Huan-Qiang; Wu, Su-Wen; Zhou, Qiongjie; Li, Xiao-Tian (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-05)
      <p><i>Background: </i>China's two-child policy has led to a trend of aging in pregnancy which was associated with adverse outcomes. This study aimed to identify the clinically cutoff maternal age for adverse obstetric outcomes in China. <p><i>Methods: </i>This secondary analysis of a multicenter retrospective cohort study included data of childbearing women from 39 hospitals collected in urban China ...