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Background and Purpose: Depression and quality of life (QOL) have an interdependent and transactional nature in stroke survivor-caregiver dyads. While the strong relationship between depression and physical and emotional QOL in stroke survivor-caregiver dyads is well known, it is less clear if this relationship is moderated by caregiver preparedness, which could easily be targeted with interventions. In this study, we examined the moderating role of caregiver preparedness on the association between depression and QOL in stroke survivor-caregiver dyads., Methods: We used a longitudinal design with follow-ups every 3 months over a 1-year period. Considering the nonindependent nature of the data (survivors and their caregivers), we used multilevel modeling to analyze data at the dyad level. We implemented 4 longitudinal dyadic moderation models (one for each QOL domain: physical, psychological, social, and environmental) using hierarchical linear modeling., Results: A sample of 222 stroke survivor-caregiver dyads was analyzed. Stroke survivors were older ( M =70.8, SD=11.9) than their caregivers ( M =52.4, SD=13.1). Stroke survivors predominantly had an ischemic stroke, equally distributed by site. Caregivers were primarily female (66%), with a medium to high educational level (57%). Caregiver preparedness significantly moderated the association between survivor depression and survivor psychological ( B =0.56, P <0.01) and environmental ( B =0.58, P <0.01) QOL at baseline and social QOL over time ( B =0.24, P <0.05). Similarly, caregiver preparedness significantly moderated the association between caregiver depression and caregiver physical ( B =0.25, P <0.01) and environmental ( B =0.18, P <0.05) QOL over time., Conclusions: Caregiver preparedness has a positive influence on both members of the dyad. Assessment of stroke-caregiver preparedness could be helpful to motivate clinicians to develop and implement interventions for stroke survivor-caregiver dyads.

Aims To examine the moderating role of caregiver preparedness on the association between stroke survivors' depression and stroke-specific quality of life dimensions. Methods and results We used a multilevel modelling approach to analyse trajectories of change in the eight Stroke Impact Scale 3.0 subscales [i.e. strength, communication, mobility, activities of daily living (ADL)/instrumental activities of daily living (IADL), memory, emotion, hand function, participation] using Hierarchical Linear Modeling. Caregiver preparedness significantly moderated the association between survivor depressive symptoms and survivor communication (B = −0.95, P < 0.01), mobility (B = −0.60, P < 0.05), and ADL/IADL (B = −0.73, P < 0.01) at baseline; linear change for strength (B = 0.83, P < 0.05) and communication (B = 0.66, P < 0.05); and quadratic change for strength (B = −0.19, P < 0.01). Although caregiver preparedness did not significantly moderate the association between survivor depressive symptoms and strength at baseline, there was a significant moderating effect for change over time. Higher levels of caregiver preparedness were significantly associated with higher survivor scores of emotion, hand function, and participation at baseline. Conclusions Including immediate caregivers in the care process, through a psycho-educational training, would mean having better-prepared caregivers and consequently more-healthy stroke survivors. Given that preparedness includes coping with stress, responding and managing emergencies, assessing help and information may require tailored interventions aimed at improving the caregivers' skills and knowledge about stroke survivors' management. [ABSTRACT FROM AUTHOR]

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