Reducing the global burden of depression: population-level analysis of intervention cost-effectiveness in 14 world regions.

Abstract

International evidence on the cost and effects of interventions for reducing the global burden of depression remain scarce. Aims To estimate the population-level cost-effectiveness of evidence-based depression interventions and their contribution towards reducing current burden. Primary-care-based depression interventions were modelled at the level of whole populations in 14 epidemiological subregions of the world. Total population-level costs (in international dollars or I$) and effectiveness (disability adjusted life years (DALYs) averted) were combined to form average and incremental cost-effectiveness ratios. Evaluated interventions have the potential to reduce the current burden of depression by 10-30%. Pharmacotherapy with older antidepressant drugs, with or without proactive collaborative care, are currently more cost-effective strategies than those using newer antidepressants, particularly in lower-income subregions. Even in resource-poor regions, each DALYaverted by efficient depression treatments in primary care costs less than 1 year of average per capita income, making such interventions a cost-effective use of health resources. However, current levels of burden can only be reduced significantly if there is a substantial increase substantial increase in treatment coverage.