Self-care tools to treat depressive symptoms in older adults with ocular diseases : a randomized controlled clinical trial
Purpose: Depression is a common problem in people with age-related macular degeneration (AMD) and diabetic retinopathy (DR). Antidepressants and psychotherapy are often underutilized. Our goal was to determine if self-care tools plus limited telephone support could reduce depressive symptoms. Methods: A single-blind randomized controlled clinical trial was conducted at Maisonneuve-Rosemont Hospital in Montreal, Canada. All eligible patients were invited to participate in the trial. To be eligible, participants must have had either late stage AMD or DR, at least mild depressive symptoms, and visual acuity better than 20/200 in their better eye. Half were randomized to the intervention arm and half to delayed intervention/usual care. The intervention consisted of large print written and audio tools incorporating cognitive-behavioral principles plus three 10-minute telephone calls from a coach. Eight-week follow-up data were collected by telephone. The primary outcome was the 8-week change in depressive symptoms as measured by the Patient Health Questionnaire (PHQ-9). Results: Eighty participants, aged 50 years and older, were recruited while 10 were lost to follow-up (12.5%) giving 70 with complete data, 35 in each group. The mean baseline PHQ-9 score was 9.5 out of 27 (SD=3.9) indicating moderate depressive symptoms. The average decrease in PHQ-9 scores over the 8 weeks was 4.9 (SD=4.2) in the intervention group and 3.2 (SD=4.6) in the usual care group, a 1.7 point difference (P=0.104). After adjusting for baseline imbalances in visual acuity, ii antidepressant use, and participation in psychotherapy, the difference increased from 1.7 to 2.3 and became statistically significant (p=0.037). Sixty percent of those in the intervention group reported having used the tools at the end of the study. Conclusions: Self-care tools plus telephone coaching led to a small improvement in depressive symptoms in patients with age-related eye disease. Additional research into the best way to support depressed patients with age-related eye disease is necessary.
Self-care tools Randomized Controlled Trial Eye disease Depressive symptoms