Introduction: There is a growing number of people with HIV who are aged 50 years or older, and the prevalence of loneliness and social isolation remains unknown.
Methods: A multicentre study was conducted across 22 GeSIDA centres. A survey was carried out to assess loneliness [UCLA 3-item Loneliness Scale-3 (UCLA-3)] and social isolation [Lubben Social Network Scale-Revised (LSNS-R)], along with sociodemographic aspects, HIV-related factors, comorbidities, tobacco, alcohol and drug consumption, quality of life, anxiety and depression, and stigma.