Association Between Age and Severity at Disability Onset and All-Cause Mortality: Longitudinal Observational Study From the Health and Retirement Study

Anying Bai   ^{1 *} , PhD ;   Cuie Liu   ^{2 *} , MD ;   Yu Jiang   ^{1, 3} , PhD ;   Weihao Xu   ⁴ , MD ;   Jian Cao   ² , MD

¹ School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China

² The 4th Healthcare Department of the Second Medical Center, Chinese PLA General Hospital, National Clinical Research Center for Geriatric Diseases, Beijing, China

³ School of Health Policy and Management, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China

⁴ Department of Geriatrics, Guangdong Provincial Geriatrics Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China

*these authors contributed equally