Giving voice to informal caregivers of community-dwelling older adults: A systematic review of empowerment interventions.

Taking care for older adults can place informal caregivers at risk for developing health problems. Therefore, interventions aiming to empower informal caregivers have been developed. Empowerment refers to a health promotion process including strategies to improve informal caregivers' self-care behaviours, stress-management and caregiving skills. In literature, empowerment-oriented interventions often target subsamples of informal caregivers defined through the care receiver's condition. These interventions, however, do not adequately capture the complexity of care needs and might even exclude informal caregivers taking care for older people without a specific diagnosis or with a subthreshold condition. Therefore, the aim of this systematic review is to provide an overview of the content and effectiveness of empowerment-oriented interventions directed at informal caregivers of community-dwelling older adults. Following the PRISMA guidelines, a systematic review was performed by searching the following databases: PubMed, PsycINFO, EMBASE and Web of Science. From a total of 6798 unique publications, 13 intervention studies, of which seven randomised controlled trials, were eligible for inclusion. According to the Mixed Methods Appraisal Tool, eight studies scored poor. The intervention studies under review represented different domains of empowerment, with cultivation of positive feelings being the most prevalent one. Social participation and physical health received little attention in interventions. Although no adverse intervention effects were observed, the studies reported mixed results with 57 positive and 47 neutral effects. The limited number and poor quality of studies emphasise the need for future research investigating the effectiveness of empowerment-oriented interventions targeting informal caregivers of older adults.