Effectiveness of a telephone intervention based on motivational health coaching for improving the mental health of caregivers of people with dementia: A randomised controlled trial

Objectives: Caring for a family member with dementia is considered one of the activities with the greatest negative impact on a person's mental health. Developing long‐lasting and effective strategies is a challenge for caregivers. This study sought to evaluate the impact of an intervention based on a programme of motivational coaching delivered by telephone in a group of caregivers of patients with dementia compared to a control group. Methods: A randomised controlled trial with a control group and an intervention group. (CONSORT guidelines were used). Telephone calls were made during six weeks, involving a process of coaching and motivational interviews. The following variables were measured in caregivers: self‐efficacy of caring, depression, perceived stress, frequency of problematic behaviours and dysfunctional thoughts. Assessments were conducted at three time points: baseline, post‐intervention and three months’ post‐intervention. Results: In total, 106 caregivers participated (53 subjects in the control group and 53 in the intervention group). Statistically significant differences (ANCOVA) were found between both groups for the self‐efficacy and stress variables, with improved results in the intervention group (p < .01). Furthermore, statistically significant differences were found in the intervention group between the baseline and post‐intervention assessments, with improvements in self‐efficacy, decreased stress and decreased dysfunctional thoughts (p < .05). The results were maintained over time for both groups. Conclusions: An intervention based on telephone calls using a health coaching approach with motivational interviewing appears to be effective for the improvement of self‐efficacy and mental health of caregivers of people with moderate dementia. Furthermore, these effects appear to be maintained over time.