LIAO Mingyu 1,2,3 , XIONG Yiquan 1,2,3 , ZHAO Peng 1,2,3 , GUO Jin 1,2,3,4 , CHEN Jingwen 1,2,3 , LIU Chunrong 1,2,3 , JIA Yulong 1,2,3 , REN Yan 1,2,3 , SUN Xin 1,2,3,4 , 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. China Sichuan Center of Technology Innovation for Real World Data, Chengdu 610041, P. R. China;
  • 4. West China School of Public Health, Sichuan University, Chengdu 610041, P. R. China;
SUN Xin, Email: sunxin@wchscu.cn; TAN Jing, Email: tanjing_wch@scu.edu.cn
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Evidence synthesis is the process of systematically gathering, analyzing, and integrating available research evidence. The quality of evidence synthesis depends on the quality of the original studies included. Validity assessment, also known as risk of bias assessment, is an essential method for assessing the quality of these original studies. Currently, there are numerous validity assessment tools available, but some of them lack a rigorous development process and evaluation. The application of inappropriate validity assessment tools to assessing the quality of the original studies during the evidence synthesis process may compromise the accuracy of study conclusions and mislead the clinical practice. To address this dilemma, the LATITUDES Network, a one-stop resource website for validity assessment tools, was established in September 2023, led by academics at the University of Bristol, U.K. This Network is dedicated to collecting, sorting and promoting validity assessment tools to improve the accuracy of original study validity assessments and increase the robustness and reliability of the results of evidence synthesis. This study introduces the background of the establishment of the LATITUDES Network, the included validity assessment tools, and the training resources for the use of validity assessment tools, in order to provide a reference for domestic scholars to learn more about the LATITUDES Network, to better use the appropriate validity assessment tools to conduct study quality assessments, and to provide references for the development of validity assessment tools.

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