JIA Yulong 1,2,3 , REN Yan 1,2,3 , WEI Wanqiang 1,2,3 , XU Ye 1,2,3 , LIU Chunrong 1,2,3 , ZHAO Peng 1,2,3 , LIU Xinghui 4 , SUN Xin 1,2,3 , TAN Jing 1,2,3
  • 1. Chinese Evidence-based Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, P. R. China;
  • 2. NMPA Key Laboratory for Real World Data Research and Evaluation in Hainan, Chengdu 610041, P. R. China;
  • 3. Sichuan Center of Technology Innovation for Real World Data, Chengdu 610041, P. R. China;
  • 4. Department of Gynecology and Obstetrics, Key Laboratory of Obstetrics and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital of Sichuan University, Chengdu 610041, P. R. China;
SUN Xin, Email: sunxin@wchscu.cn; TAN Jing, Email: tanjing84@outlook.com
Export PDF Favorites Scan Get Citation

The use of repeated measurement data from patients to improve the classification ability of prediction models is a key methodological issue in the current development of clinical prediction models. This study aims to investigate the statistical modeling approach of the two-stage model in developing prediction models for non-time-varying outcomes using repeated measurement data. Using the prediction of the risk of severe postpartum hemorrhage as a case study, this study presents the implementation process of the two-stage model from various perspectives, including data structure, basic principles, software utilization, and model evaluation, to provide methodological support for clinical investigators.