Economic threshold analysis of delivering a task-sharing treatment for common mental disorders at scale: the Friendship Bench, Zimbabwe.

Journal: Evidence-based mental health

Volume: 25

Issue: 2

Year of Publication: 2022

Affiliated Institutions:  Health Services and Population Research, King's College London, London, UK andy.healey@kcl.ac.uk. Friendship Bench, Harare, Zimbabwe. Department of Health Policy, London School of Economics, London, UK. Health Services and Population Research, King's College London, London, UK. Department of Epidemiology, University of Washington, Seattle, Washington, USA. Center for Research in Neuropsychology and Cognitive and Behavioral Intervention (CINEICC), University of Coimbra, Coimbra, Portugal.

Abstract summary 

Task-sharing treatment approaches offer a pragmatic approach to treating common mental disorders in low-income and middle-income countries (LMICs). The Friendship Bench (FB), developed in Zimbabwe with increasing adoption in other LMICs, is one example of this type of treatment model using lay health workers (LHWs) to deliver treatment.To consider the level of treatment coverage required for a recent scale-up of the FB in Zimbabwe to be considered cost-effective.A modelling-based deterministic threshold analysis conducted within a 'cost-utility' framework using a recommended cost-effectiveness threshold.The FB would need to treat an additional 3413 service users (10 per active LHW per year) for its scale-up to be considered cost-effective. This assumes a level of treatment effect observed under clinical trial conditions. The associated incremental cost-effectiveness ratio was $191 per year lived with disability avoided, assuming treatment coverage levels reported during 2020. The required treatment coverage for a cost-effective outcome is within the level of treatment coverage observed during 2020 and remained so even when assuming significantly compromised levels of treatment effect.The economic case for a scaled-up delivery of the FB appears convincing in principle and its adoption at scale in LMIC settings should be given serious consideration.Further evidence on the types of scale-up strategies that are likely to offer an effective and cost-effective means of sustaining required levels of treatment coverage will help focus efforts on approaches to scale-up that optimise resources invested in task-sharing programmes.

Authors & Co-authors:  Healey Andrew A Verhey Ruth R Mosweu Iris I Boadu Janet J Chibanda Dixon D Chitiyo Charmaine C Wagenaar Brad B Senra Hugo H Chiriseri Ephraim E Mboweni Sandra S Araya Ricardo R

Study Outcome 

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Citations :  Araya R, Flynn T, Rojas G, et al. . Cost-Effectiveness of a primary care treatment program for depression in low-income women in Santiago, Chile. Am J Psychiatry 2006;163:1379–87. 10.1176/ajp.2006.163.8.1379
Authors :  11
Identifiers
Doi : 10.1136/ebmental-2021-300317
SSN : 1468-960X
Study Population
Male,Female
Mesh Terms
Cost-Benefit Analysis
Other Terms
adult psychiatry;anxiety disorders;depression & mood disorders
Study Design
Case Study
Study Approach
Country of Study
Zimbabwe
Publication Country
England