• E Swart, I Böhlert, P Jakobs, B P Robra, F Schneider, W D Leber, and U Dembski.
• Institut für Sozialmedizin, Med. Fakultät der Otto-von-Guericke-Universität Magdeburg.
• Gesundheitswesen. 1996 Jan 1; 58 (1): 10-5.

ProblemPerformance of an analysis of hospitalised cases based on processed statutory health insurance data on inpatient treatments. Object of the examination were regional differences in the frequency of hospitalisation and in the volume of payable (invoised) days and the relevant determining parameters.Material And MethodsThe analysis is based on a total of 152,854 cases of hospitalisation recorded in 1994 by the Magdeburg Statutory Health Insurance Body. These include data (rendered anonymous) on each insured person and on the specialist branch of the referring physician, case characteristics as well as characterising features of the hospital. Additionally, 249,471 diagnosis recordings are available from the total of the recorded cases.ResultsThere is considerable regional variation in the number of hospital care days within the area of the Magdeburg Statutory Health Insurance Body. These regional differences are noticeable both in the frequency of referrals (broken down according to the regional statutory health insurance offices) and in the average duration of stay (in the hospitals of the region). Reasons for this heterogeneity are evident from the structural conditions of medical care by the physicians under contact with the statutory health insurance body (greater frequency of referral to hospital in areas where there are fewer doctors per 10.000 inhabitants and with less voluminous practices) and from different management strategies of hospitals even if medical care services are well standardised.DiscussionThe results prompt more detailed analyses of inpatient care activities including structural parameters of the outpatient sector. Actually we can recognise certain limitations preventing a uniform patient care by statutory health insurance physicians and uniform inpatient care, in the sense imposed by the official policy to ensure such uniformity.

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