Group-based behaviour therapy improves self-care, glycaemic control and distress in adults with type 1 diabetes

Aims: Psychological interventions have had modest effects on HbA1c in adults with Type 1 diabetes (T1D). We evaluated a novel behaviour therapy (BT) group program aiming to improve diabetes self-care and reduce HbA1c and distress. Core features were the application of a functional-analytic model, behavioural self-management training, and personally selected T1D self-care behaviours as treatment targets. Methods: Participants with T1D, 2-consecutive HbA1c ≥ 8.5 %(69 mmol/mol) and/or diabetes-related emotional/behavioural difficulties who had received specialist multidisciplinary input for ≥2 years completed 6-sessions of BT over 9-weeks. Outcomes were assessed at baseline, on completing 5-consecutive weekly sessions (post-) and at session 6, 1-month after (follow-up). Results: Of 66 participants mean age 37.9 years, mean age at T1D diagnosis 22.0 years, and median T1D duration 14 years, 54 completed BT. HbA1c improved from baseline to follow-up (9.7 ± 1.9 %–8.8 ± 1.3 %, p < 0.001), as did diabetes distress (DD: total score 49.2 ± 7.8 baseline, 38.9 ± 14.7 post- and 32.8 ± 11.7 follow-up, p < 0.001). All DD subscales of emotional burden, and physician, regimen, and interpersonal distress, improved (p < 0.001). Consistent results were observed for patients on multiple daily injections and continuous subcutaneous insulin infusion therapy. Conclusions: BT based on a functional-analytic and behavioural self-management model holds promise as an effective means of improving HbA1c and reducing DD in adults with T1D.