“…In the present project, we have defined these predictors as “dyad‐related” because they will be measured in both patients and caregivers. The results of individual studies conducted on DM, COPD and HF patients have shown that self‐care is poorer when patients and caregivers are stressed (Endrighi et al., ; Kaptein et al., ; Dionne‐Odom et al., ), are depressed (Bourbeau & Bartlett, ; Dickson et al., ; Jerant, Kravitz, Moore‐Hill, & Franks, ; Katon, ), receive poor social support (Bidwell et al., ; Graven & Grant, ; Lyons et al., ; Pereira et al., ; Song, Nam, Park, Shin, & Ku, ), do not collaborate in symptom management (Buck, Kitko, & Hupcey, ; Buck, Zambroski, & Hupcey, ) and have a lower mutuality (i.e., “the positive quality of the relationship between caregiver and care receiver”) (Lum, Lo, Hooker, & Bekelman, , p. 307).…”