Frontiers | Association between chronic pain and cognitive frailty among middle-aged and elderly individuals: evidence from the China Health and Retirement Longitudinal Study
Tianjiao Li 1,2 † Lingxuan Li 3 † Hongyang Xie 4 Rongyu Ping 1,5 Yane Guo 1 Dongmei Li 1 Yuwei Zhang 6 Xiujuan Bai 1 * Bo Sun 1 * 1 Geriatric Neurological Department of the Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China 2 Beijing Retired Cadre Service Administration, Beijing, China 3 Department of Psychology, College of Humanities and Social Sciences, Beijing Forestry University, Beijing, China 4 Neurological Department of
