“…Background variables are collected only in the baseline survey including age, sex, education, income, marital status, native language, living environment, form of housing, cohabitation status, and informal caring status. Other variables and measurements used in the baseline survey are material deprivation (seven items [ 28 ]), ability to make ends meet, access to services (health and social care, transport, other services), adequacy of social and health care services, access and use of internet and digital devices, environmental and neighbourhood satisfaction, safety and security in home and surrounding environment, ageism, abuse [ 29 ], and access and participation in voting.…”