9. The “supply hypothesis” and medical practice variation in primary care: testing economic and clinical models of inter-practitioner variation (2000)
Peter Davis, Barry Gribben, Alastair Scott, Roy Lay-Yee
Medical practice variation (MPV) is marked, apparently ubiquitous across the health sector, well documented, and continues to be a focus of professional and policy interest. MPV have stimulated two paths of investigation, one economic in emphasis and the other more clinical in orientation; while health economists have stressed the potential role of income incentives in medical decision-making, health services research has tended to emphasise clinical ambiguity as a factor in practitioner decisions.