“…Across studies, the risk and protective factors that are known from before the pandemic remained risk or protective factors during the pandemic. For example, and similar to well-established findings (e.g., Algren et al, 2020;Buecker, Ebert, et al, 2020;Luo et al, 2012;Pinquart & Sörensen, 2000), socio-economic status was negatively associated with loneliness, and health was positively associated with loneli-ness (Bu et al, 2020a;Pan et al, 2020). Most correlates of loneliness reported in the included articles could be subsumed under "mental health variables", including stress, anxiety, depression, sleep problems, drug use, and general worries.…”