Cost-Effectiveness of Peer-Educator–Delivered Lifestyle Modification for Type 2 Diabetes Prevention in a Young Healthy Population in Sri Lanka: A Trial-Based Economic Evaluation and Economic Model

James Shearer (), Miral Kalyani, Anastasios Mangelis, Dileep Silva, Padmal Silva, Mahen Wijesuriya and Janaka Karalliedde
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James Shearer: The David Goldberg Centre, Psychology and Neuroscience at King’s College London
Miral Kalyani: London School of Hygiene and Tropical Medicine
Anastasios Mangelis: King’s College London
Dileep Silva: Health Human Resources, Ministry of Health
Padmal Silva: National Institute of Health Sciences
Mahen Wijesuriya: National Diabetes Centre
Janaka Karalliedde: King’s College London

PharmacoEconomics - Open, 2021, vol. 5, issue 4, No 12, 693-700

Abstract: Abstract Background This study evaluated the cost effectiveness of an intensive lifestyle modification (LSM) intervention delivered by peer educators for the prevention of type 2 diabetes mellitus in a young at-risk population in a low healthcare resource setting. Objective The aim of this study was to evaluate the short-term and long-term cost effectiveness of an intensive lifestyle modification intervention for type 2 diabetes prevention in a young urban at-risk population in Sri Lanka. Methods This was an economic evaluation using cost and outcome data from a randomized controlled trial. We randomized 3539 healthy individuals aged 5–40 years with risk factors for type 2 diabetes to either 3-monthly (P-LSM n = 1727) or 12-monthly (C-LSM n = 1812) peer-educator advice aimed at reducing weight, improving diet, reducing psychological stress and increasing physical activity. A cost-effectiveness analysis was conducted from a health system perspective with outcomes expressed as disability-adjusted life-years (DALYs). Intervention costs and outcomes were collected during a median clinical trial period of 3 years and extrapolated to a lifetime horizon using economic modelling. Uncertainty in the lifetime model was explored by structural and probabilistic sensitivity analyses. Results The costs of the more intensive peer support programme were partially offset by reduced costs of type 2 diabetes complications recorded over the trial period and completely offset by lifetime cost savings of 6000 LKR. The more intensive P-LSM also averted more DALYs, estimated at 0.456 DALYs over the lifetime of participants. Conclusions In a young at-risk Sri Lanka population, an intensive LSM programme was cost effective, averting more DALYs at an acceptable additional cost than a much less intensive LSM programme. Early intervention in young at-risk people represents good value for money from the Sri Lankan health care payer perspective.

Date: 2021
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DOI: 10.1007/s41669-021-00284-5

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