Internet-based acceptance and commitment therapy for psychological distress experienced by people with hearing problems: a pilot randomized controlled trial

Psychological distress is common among people with hearing problems, but treatments that specifically target this aspect have been almost non-existent. In this pilot randomized controlled trial, an eight-week long Internet-based treatment, informed by Acceptance and Commitment Therapy, was administered to explore the feasibility and efficacy of such a treatment. Included participants were randomized to either treatment (n=31) or wait-list control (n=30) condition. All participants were measured prior to randomization and immediately after treatment ended using standardized self-report instruments measuring hearing-related emotional and social adjustment (Hearing Handicap Inventory for the Elderly - S, HHIE-S), quality of life (Quality of Life Inventory, QOLI), and symptoms of depression and anxiety (Patient health Questionnaire, PHQ-9 and Generalized Anxiety Disorder scale, GAD-7). Linear mixed effects regression analysis using the full intention-to-treat sample demonstrated that the treatment had superior outcomes on the main outcome measure as compared with the control group, Cohen's d=0.93, 95% CI [0.24, 1.63]. The benefits of treatment over control were also evident in scores of depression, Cohen's d=0.61, 95% CI [0.04, 1.19], and quality of life, Cohen's d=0.88, 95% CI [0.14, 1.61]. The results provide preliminary support for Internet-delivered acceptance and commitment therapy as a potentially effective treatment of psychological symptoms associated with hearing problems.