Chinese Evidence-Based Medicine Center National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu Sichuan 610041 China;
Department of Health Research Methods Evidence and Impact McMaster University Hamilton Ontario L8S 4L8 Canada;
Biostatistics Unit St Joseph's Healthcare—Hamilton Ontario L8S 4L8 Canada;
Department of Respiratory and Critical Care Medicine West China Hospital Sichuan University Chengdu Sichuan 610041 China;
School of Economics Sichuan University Chengdu Sichuan 610041 China;
Chinese Evidence-Based Medicine Center National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu Sichuan 610041 China;
Chinese Evidence-Based Medicine Center National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu Sichuan 610041 China;
Chinese Evidence-Based Medicine Center National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu Sichuan 610041 China;
College of Systems Engineering National University of Defense Technology Changsha Hunan 410073 China;
Department of Global Public Health Karolinska Institute Stockholm Sweden;
Department of Health Research Methods Evidence and Impact McMaster University Hamilton Ontario L8S 4L8 Canada;
Biostatistics Unit St Joseph's Healthcare—Hamilton Ontario L8S 4L8 Canada;
Center for Health Economics and Policy Analysis Department of Health Research Methods Evidence and Impact McMaster University Hamilton Ontario L8S 4L8 Canada;
Chinese Evidence-Based Medicine Center National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu Sichuan 610041 China;
