The impact of the UK NHS purchaser-provider split on the 'rational' introduction of new medical technologies.

This article uses evidence from case studies of the introduction of three new medical technologies to explore the impact of the UK NHS purchaser--provider split on the diffusion of new medical technologies. A desirable policy objective is assumed to be the 'rational' diffusion of medical technologies according to evidence that they are clinically and cost effective. Theoretical mechanisms are identified through which diffusion could be controlled, and the case studies are used to explore the extent to which rational technology diffusion occurs in practice in the NHS. They illustrate the influence of purchasers and providers on the introduction and early use of new technologies and explore the extent to which research about clinical and cost effectiveness is used to inform decisions about technology adoption. The results demonstrate the limited influence of purchasers and the short term clinical and organisational objectives pursued by providers in relation to technology adoption. It is suggested that initiatives to promote rational technology diffusion might be most effective if they are focused on decision making in providers, and if they aim to balance the influence on decisions of administrative and financial information about the technologies with more systematic use of research about clinical and cost effectiveness.

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