School of Management Hubei University of Education Wuhan 430205 China;
Department of Biliary-Pancreatic Surgery Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Biliary-Pancreatic Surgery Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
chronic disease; multimorbidity; depression; functional symptoms; mediation effect;