• Britt E Arrelöv, Lars Borgquist, and Kurt F Svärdsudd.
• Uppsala University, Department of Public Health and Caring Sciences, Family Medicine and Clinical Epidemiology Section, Uppsala, Sweden. britt.arrelov@pubcare.uu.se
• Eur J Public Health. 2005 Oct 1;15(5):470-4.

BackgroundPhysicians have a central role as gatekeepers to the social security system, including sick-listing. Variation in physicians' sick-listing practices has been demonstrated in several studies. The objective of this study was to determine whether local structural factors affect sick-listing practice.MethodsA total of 57,563 consecutive sick-listing certificates, issued during 4 months in 1995 and 2 months in 1996, were collected from the local branches of the National Social Insurance Office in eight Swedish counties. County code, local community population size and presence of a hospital in the area were used as indicators of local structural factors. Length of the sick-listing certificates and of the sick-listing episodes were used as outcome variables.ResultsAfter adjustment for the influence of category of issuing physician, patients' age, sex and diagnosis ('case mix'), and type of certificate there was a large variation of the length of the sick-listing certificates and of the sick-listing episodes between counties, between communities of various size and between communities with or without a hospital in the area. All these factors were independently and significantly correlated to the length of the certificate and of the sick-listing episode.ConclusionsThe results support the hypothesis that physicians' sick-listing practice is influenced by local structural factors.

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