Abstract:

Objective To investigate the prevalence of multi ⁃morbidity and related functional limitation among middle⁃aged and senior population in China，and analyze the related influencing factors. Methods The data from China Health and Retirement Longitudinal Study 2018（CHARLS 2018）were used，covering population over 45 years old in 28 provinces across China. The study included 14 types of chronic diseases and the participant who was confirmed with two or more types was defined as the one with multi⁃morbidity. Activity Daily Living，（ADL）， Instrumental Activity Daily Living（IADL）and the degree of depression were used to evaluate health outcomes. Results Patients with multi ⁃ morbidity accounted for 53.8% ；the proportions of two，three，and four or more chronic diseases were 19.7%，14.2% and 20.0%，respectively. ADL loss，IADL loss，and depression accounted for 26.7%，26.6%，and 38.5%，respectively. Age，female sex，poor marital status，living environment were risk factors for comorbidity. Conclusion Multi⁃morbidity has become one of the most serious public health concerns in China. The government should increase resources and policy input，as well as adjust the focus of health system services in order to improve the effectiveness of multi⁃morbidity management.

Key words:

multi?morbidity, functional limitation, china health and retirement longitudinal study