Table 1.

Overview of the concepts examined in the included studies.

	References
Examined concepts in relation to social interactions
Social interactions	Campo & Chaudhury, 2012; De Boer, Hamers, Zwakhalen, Tan, Beerens, & Verbeek, 2017a; Moore & Verhoef, 1999; Wood et al., 2005
Social contacts	Weyerer et al., 2010
Social relationships	Abrahamson et al., 2012; De Rooij et al., 2012; Kok et al., 2018; Van der Zon et al., 2018; Verbeek et al., 2010; Wolf-Ostermann et al., 2012
Social engagement	De Boer, Hamers, Zwakhalen, Tan & Verbeek, 2017b; De Rooij et al., 2012; Morgan-Brown et al., 2013
Social groups	Doyle et al., 2012
Social networks	Abbott & Pachucki, 2017; Abbott et al., 2017
Social communities	Aasgaard et al., 2017
Social life	Moore, 1999
Examined concepts as domains of quality of life assessments
QUALIDEM: care relationship,  social relations and social  isolation	De Boer, Hamers, Zwakhalen, Tan, & Verbeek, 2017b; De Rooij et al., 2012; Kok et al., 2018; Van der Zon et al., 2018; Verbeek et al., 2010; Wolf-Ostermann et al., 2012
2007 Minnesota Resident  Satisfaction Survey:  meaningful relationships	Abrahamson et al., 2012