“…Several studies ( n = 7) assessed both the caregiver and PWD (Bakker et al, 2014; Black et al, 2013; Gaugler et al, 2005; Hodgson, Black, Johnston, Lyketsos, & Samus, 2014; Hughes et al, 2014; Jennings et al, 2015; Stirling et al, 2010) and ranged in sample size from n = 20 dyads to n = 5,831 dyads. The majority of the studies we reviewed were carried out in the United States; other work originated from Greece, Canada, Scotland, Australia, Finland, Germany, Italy, and Austria (Dello Buono et al, 1999; Dimakopoulou, Sakka, Efthymiou, Karpathiou, & Karydaki, 2015; Ducharme et al, 2014; McWalter et al, 1998; Philp et al, 1995; Raivio et al, 2007; Riesner, 2014; Rosa et al, 2010; Stirling et al, 2010; Wancata et al, 2005). One study (Reynolds et al, 2000) utilized data provided by sites in the United Kingdom, Sweden, and the United States.…”