• Medical care · Oct 2010

    Controlled Clinical Trial

    Cost-effectiveness of a quality improvement collaborative focusing on patients with diabetes.

    • Loes M T Schouten, Louis W Niessen, Jeroen W A M van de Pas, Richard P T M Grol, and Marlies E J L Hulscher.
    • Dutch Institute for Healthcare Improvement, Utrecht, The Netherlands. l.schouten@cbo.nl
    • Med Care. 2010 Oct 1; 48 (10): 884-91.

    ObjectiveTo investigate the lifelong health effects, costs, and cost-effectiveness of a quality improvement collaborative focusing on improving diabetes management in an integrated care setting.Study Design And MethodsEconomic evaluation from a healthcare perspective with lifetime horizon alongside a nonrandomized, controlled, before-after study in the Netherlands. Analyses were based on 1861 diabetes patients in 6 intervention and 9 control regions, representing 37 general practices and 13 out-patient clinics. Change in the United Kingdom Prospective Diabetes Study score, remaining lifetime, and costs per quality-adjusted life year gained were calculated. Probabilistic life tables were constructed using the United Kingdom Prospective Diabetes Study risk engine, a validated diabetes model, and nonparametric bootstrapping of individual patient data.ResultsAnnual United Kingdom Prospective Diabetes Study risk scores reduced for cardiovascular events (hazard ratio: 0.83 and 0.98) and cardiovascular mortality (hazard ratio: 0.78 and 0.88) for men and women, respectively. Life expectancy improved by 0.97 and 0.76 years for men and women, and quality-adjusted life years by 0.44 and 0.37, respectively. Higher life expectancy in the intervention group increased lifelong costs by &OV0556;860 for men and &OV0556;645 for women. Initial program costs were about &OV0556;22 per patient. The incremental costs per quality-adjusted life year were &OV0556;1937 for men and &OV0556;1751 for women compared with usual care costs. There is a probability >95% that the collaborative is cost-effective, using a threshold of &OV0556;20,000 per quality-adjusted life year.ConclusionOptimizing integrated and patient-centered diabetes care through a quality-improvement collaborative is cost-effective compared with usual care.

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