The uptake of childhood immunization and financial incentives to general practitioners.

Among the target-linked services introduced by the 1990 general practitioners' contract, childhood immunization in Scotland is the best suited for GPs to achieve the high target, given a centralized call and recall system and public confidence in the service. Yet over 25% of the practices in the area of the Greater Glasgow Health Board did not qualify for the high target payments in the last quarter of the 1991/92 financial year. Examining indicators of the socioeconomic characteristics of the patient population, practice profiles and the effect of financial incentives, we discuss the reasons for cross-practice variation in the uptake of this service and estimate the probability of practices which missed the high target achieving it in the future.