Fig. 1
The MOA’ received external support status with their OCM selection. a The relationship between family members; (b) The relationship with neighbours; (c) The main medical insurance they have. MOA: Middle-aged and older adults; HOCM: Home-based old-age care mode; COCM: Community-family old-age care mode; Urban employee basic medical insurance: In China, it refers to basic medical insurance program mandated by law, in which all urban employees must enroll. The insurance premium shall be borne by both the employer and the employee; Basic medical insurance for residents: It is a kind of basic medical insurance for residents. Insurance premiums are mainly paid by individual residents (families), supplemented by appropriate government subsidies