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Abstract

Aims: To determine whether the provision of contingency management using financial incentives to improve hepatitis B vaccine completion in people who inject drugs entering community treatment represents a cost-effective use of healthcare resources.
Design A probabilistic cost-effectiveness analysis was conducted, using a decision-tree to estimate the short-term clinical and health-care cost impact of the vaccination strategies, followed by a Markov process to evaluate the long-term clinical consequences and costs associated with hepatitis B infection.
Settings and participants: Data on attendance to vaccination from a UK cluster randomized trial.
Intervention: Two contingency management options were examined in the trial: fixed versus escalating schedule financial incentives.
Measurement: Life-time health-care costs and quality-adjusted life years discounted at 3.5% annually; incremental cost-effectiveness ratios.
Findings: The resulting estimate for the incremental life-time health-care cost of the contingency management strategy versus usual care was £21.86 [95% confidence interval (CI) = –£12.20 to 39.86] per person offered the incentive. For 1000 people offered the incentive, the incremental reduction in numbers of hepatitis B infections avoided over their lifetime was estimated at 19 (95% CI = 8–30). The probabilistic incremental cost per quality adjusted life-year gained of the contingency management programme was estimated to be £6738 (95% CI = £6297–7172), with an 89% probability of being considered cost-effective at a threshold of £20 000 per quality-adjusted life years gained (97.60% at £30 000).
Conclusions: Using financial incentives to increase hepatitis B vaccination completion in people who inject drugs could be a cost-effective use of health-care resources in the UK as long as the incidence remains above 1.2%.

Item Type:	Article
Uncontrolled Keywords:	11 Medical And Health Sciences, 17 Psychology And Cognitive Sciences
Subjects:	R Medicine > RA Public aspects of medicine R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
Divisions:	Public Health Institute
Publisher:	Wiley
Related URLs:	Author
Date Deposited:	30 Nov 2017 11:29
Last Modified:	03 Sep 2021 23:34
DOI or ID number:	10.1111/add.13385
URI:	https://researchonline.ljmu.ac.uk/id/eprint/7630

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