Samira Barbara Jabakhanji1, Jan Sorensen2, Robert M Carney3, Chris Dickens4, Martin Dempster5, Jonathan Gallagher6, Isabela Caramlau7, Frank Doyle8. 1. Healthcare Outcomes Research Centre, RCSI University of Medicine and Health Sciences, Dublin, Ireland. Electronic address: samirabjabakhanji@rcsi.ie. 2. Healthcare Outcomes Research Centre, RCSI University of Medicine and Health Sciences, Dublin, Ireland. 3. Department of Psychiatry, Washington University School of Medicine, St Louis, MO, USA. 4. College of Medicine and Health, University of Exeter, Exeter, United Kingdom. 5. School of Psychology, Queen's University Belfast, Northern Ireland, United Kingdom. 6. Department of Cardiology, Beaumont Hospital, Dublin, Ireland. 7. Department of Psychology, Beaumont Hospital, Dublin, Ireland. 8. Department of Health Psychology, RCSI University of Medicine and Health Sciences, Dublin, Ireland.
Abstract
BACKGROUND: A substantial proportion of individuals with coronary artery disease experience moderate or severe acute depression that requires treatment. We assessed the cost-effectiveness of four interventions for depression in individuals with coronary artery disease. METHODS: We assessed effectiveness of pharmacotherapy, psychotherapy, collaborative care and exercise as remission rate after 8 and 26 weeks using estimates from a recent network meta-analysis. The cost assessment included standard doses of antidepressants, contact frequency, and staff time per contact. Unit costs were calculated as health services' purchase price for pharmaceuticals and mid-point staff salaries obtained from the Irish Health Service Executive and validated by clinical staff. Incremental cost-effectiveness ratios were calculated as the incremental costs over incremental remissions compared to usual care. High- and low-cost scenarios and sensitivity analysis were performed with changed contact frequencies, and assuming individual vs. group psychotherapy or exercise. RESULTS: After 8 weeks, the estimated incremental cost-effectiveness ratio was lowest for group exercise (€526 per remission), followed by pharmacotherapy (€589), individual psychotherapy (€3117) and collaborative care (€4964). After 26 weeks, pharmacotherapy was more cost-effective (€591) than collaborative care (€7203) and individual psychotherapy (€9387); no 26-week assessment for exercise was possible. Sensitivity analysis showed that group psychotherapy could be most cost-effective after 8 weeks (€519) and cost-effective after 26 weeks (€1565); however no group psychotherapy trials were available investigating its effectiveness. DISCUSSION: Large variation in incremental cost-effectiveness ratios was seen. With the current assumptions, the most cost-effective depression intervention for individuals with coronary artery disease after 8 weeks was group exercise.
BACKGROUND: A substantial proportion of individuals with coronary artery disease experience moderate or severe acute depression that requires treatment. We assessed the cost-effectiveness of four interventions for depression in individuals with coronary artery disease. METHODS: We assessed effectiveness of pharmacotherapy, psychotherapy, collaborative care and exercise as remission rate after 8 and 26 weeks using estimates from a recent network meta-analysis. The cost assessment included standard doses of antidepressants, contact frequency, and staff time per contact. Unit costs were calculated as health services' purchase price for pharmaceuticals and mid-point staff salaries obtained from the Irish Health Service Executive and validated by clinical staff. Incremental cost-effectiveness ratios were calculated as the incremental costs over incremental remissions compared to usual care. High- and low-cost scenarios and sensitivity analysis were performed with changed contact frequencies, and assuming individual vs. group psychotherapy or exercise. RESULTS: After 8 weeks, the estimated incremental cost-effectiveness ratio was lowest for group exercise (€526 per remission), followed by pharmacotherapy (€589), individual psychotherapy (€3117) and collaborative care (€4964). After 26 weeks, pharmacotherapy was more cost-effective (€591) than collaborative care (€7203) and individual psychotherapy (€9387); no 26-week assessment for exercise was possible. Sensitivity analysis showed that group psychotherapy could be most cost-effective after 8 weeks (€519) and cost-effective after 26 weeks (€1565); however no group psychotherapy trials were available investigating its effectiveness. DISCUSSION: Large variation in incremental cost-effectiveness ratios was seen. With the current assumptions, the most cost-effective depression intervention for individuals with coronary artery disease after 8 weeks was group exercise.