Beijing, 100853
China
Government of the People's Republic of China - Chinese PLA General Hospital
COVID-19 pandemic, Chinese older adults, Health impact, Chronic disease, Cognitive impairment, ADL disability, Anxiety, Falls, CLHLS, Young-old, Oldest-old, Health trends, Healthcare access, Public health emergency, Prevalence, Longitudinal study, Populati
Hip fracture· Low- and middle-income countries· Mortality· Postoperative complications· Prehospital delay· Risk factor