Accident and emergency attendance rates: variation among patients from different general practices.

As a consequence of the 1989 National Health Service review health authorities are likely to take a greater interest in patterns of use of secondary care services by patients of different general practitioners. Use of accident and emergency departments has been shown to predict subsequent use of other hospital services. If meaningful comparisons are to be made between practices it is important to identify factors other than variation in clinical practice which influence attendance at accident and emergency departments. A one in 20 sample of patients attending an accident and emergency department was studied. Patients were aggregated by general practice and by electoral ward of residence, and the influence of a range of variables was examined using multiple regression. For both groups of patients distance from an accident and emergency department was an important factor in the rate of attendance. It was possible to examine the effect of several socioeconomic variables in the analysis by electoral ward: these were not associated significantly with attendance rates. Similarly, in the analysis by practice, mean list size per partner could not explain variation in attendance rates. This study supports others which have indicated that distance from an accident and emergency department must be taken into account when interpreting attendance rates.