Mutuality and Self-Care in the Patient-Caregiver Dyads in the Context of Coronary Heart Disease: An Exploration of the Mediating Role of Self-Efficacy.

This was a secondary analysis of baseline data collected for another study, so it could not choose variables best suited to the mutuality question. The sample was convenience based: 457 patients were initially enrolled, but 136 with an informal caregiver were analysed, so the dyads may not represent all coronary heart disease patients. All participants were from Italy, and Italian family caregiving patterns may make mutuality and caregiver involvement higher than in other settings. The analysis was cross-sectional, so it cannot show that mutuality or self-efficacy caused better self-care. All main measures were self-reported, so social desirability or recall bias may have affected scores. Some caregiver pathways had low estimated power, including pathways with power 0.34, so small effects could be missed or unstable. Unmeasured factors such as personality, cognition, and healthcare environment were not included.

The authors declared no conflicts of interest. The supplied metadata lists non-U.S. government research support, but no funder is named in the article text.

Do not read this as proof that improving patient-caregiver closeness will improve self-care. The study measured associations at one time point, tested no intervention, and reported effects that were indirect through self-efficacy rather than direct.