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Laxy, M. ; Wilson, E.C.F.* ; Boothby, C.E.* ; Griffin, S.J.*

Incremental costs and cost-effectiveness of intensive treatment in individuals with type 2 diabetes detected by screening in the ADDITION-UK trial: An update with empirical trial-based cost data.

Value Health 20, 1288-1298 (2017)
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Open Access Green as soon as Postprint is submitted to ZB.
Background: There is uncertainty about the cost-effectiveness of early intensive treatment versus routine care in individuals with type 2 diabetes detected by screening. Objectives: To derive a trial-informed estimate of the incremental costs of intensive treatment as delivered in the Anglo-Danish-Dutch Study of Intensive Treatment in People with Screen-Detected Diabetes in Primary Care-Europe (ADDITION) trial and to revisit the long-term cost-effectiveness analysis from the perspective of the UK National Health Service. Methods: We analyzed the electronic primary care records of a subsample of the ADDITION-Cambridge trial cohort (n = 173). Unit costs of used primary care services were taken from the published literature. Incremental annual costs of intensive treatment versus routine care in years 1 to 5 after diagnosis were calculated using multilevel generalized linear models. We revisited the long-term cost-utility analyses for the ADDITION-UK trial cohort and reported results for ADDITION-Cambridge using the UK Prospective Diabetes Study Outcomes Model and the trial-informed cost estimates according to a previously developed evaluation framework. Results: Incremental annual costs of intensive treatment over years 1 to 5 averaged £29.10 (standard error = £33.00) for consultations with general practitioners and nurses and £54.60 (standard error = £28.50) for metabolic and cardioprotective medication. For ADDITION-UK, over the 10-, 20-, and 30-year time horizon, adjusted incremental quality-adjusted life-years (QALYs) were 0.014, 0.043, and 0.048, and adjusted incremental costs were £1,021, £1,217, and £1,311, resulting in incremental cost-effectiveness ratios of £71,232/QALY, £28,444/QALY, and £27,549/QALY, respectively. Respective incremental cost-effectiveness ratios for ADDITION-Cambridge were slightly higher. Conclusions: The incremental costs of intensive treatment as delivered in the ADDITION-Cambridge trial were lower than expected. Given UK willingness-to-pay thresholds in patients with screen-detected diabetes, intensive treatment is of borderline cost-effectiveness over a time horizon of 20 years and more.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Addition Trial ; Cost-effectiveness ; Intensive Treatment ; Screen-detected Diabetes; Randomized Controlled-trial; Ukpds Outcomes Model; Health-care Costs; Multifactorial Intervention; Blood-pressure; Follow-up; Mortality; Europe; Therapy; Glucose
ISSN (print) / ISBN 1098-3015
e-ISSN 1524-4733
Journal Value in Health
Quellenangaben Volume: 20, Issue: 10, Pages: 1288-1298 Article Number: , Supplement: ,
Publisher Elsevier
Publishing Place New York, NY
Reviewing status Peer reviewed