“…The majority of participants (78.8%) were part of binary samples (Joling, van Marwijk, Smit, et al., 2012; Mittelman et al., 2004), and 98.2% of them were in spousal relationships. In one of the quantitative studies, the participants lived in nursing homes (Agar et al., 2017), while participants from the other studies all resided in their own homes (Francisco et al., 2022; Gorska et al., 2016; Joling et al., 2013; Joling, van Marwijk, Smit, et al., 2012; Joling, van Marwijk, van der Horst, et al., 2012; Mittelman et al., 1993; Mittelman et al., 1996; Mittelman et al., 2004). As for the two case reports, the participants were hospitalised (Joshi, 2013; Nenner, 2013).…”