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Background: To improve the feasibility of shifting medical specialist to general practitioner (GP) services in patient-centred health care systems, it is important to know how this substitution is valued by patients. However, insight into patients' preferences is lacking., Aim: This study aims to fill this gap by assessing whether patients' preferences for substitution are related to the type of medical intervention., Methods: Questionnaires were sent to 1000 members of the Dutch Insurants Panel (potential patients). Panel members were asked about their preferences for and use of medical specialist and GP services regarding 11 medical interventions. Six hundred and ninety-four members (69%) responded. We used multilevel multinomial regression to analyse the data., Results: Preferences were significantly related to medical intervention type. GP services were preferred for follow-up treatments (e.g. removing stitches) and non-complex invasive treatments (e.g. removal of lumps), and medical specialist services were preferred for complex invasive treatments (e.g. injection therapy for varicose veins), non-invasive treatments (e.g. start of insulin therapy) and diagnostic examinations (e.g. abdominal ultrasound). Age, effort required to visit a GP, perceived health status and previous treatment experiences also influenced preferences but did not confound the effects of medical intervention type., Conclusion: This study provides strong indications that patients' preferences for substitution are influenced by the type of medical intervention. Therefore it seems important that health policy makers, purchasers and practitioners take the preferences of (potential) patients into account.

Background: Emergency medical admissions to UK hospitals have been increasing steadily over the past few decades and there are likely to be a proportion of these admissions that are avoidable. This evaluation aims to demonstrate whether a general practitioner support unit (GPSU) reduces general practitioner (GP) referred emergency medical admissions to an acute hospital., Methods: The GPSU comprises a team of GPs based in the hospital with the purpose of providing alternatives to admission for medical referrals from community GPs. This is an observational study of patients referred and admitted to the Medical Admissions Unit (MAU) of an acute hospital over two six-month periods, in 2007 prior to and in 2008 after the introduction of the GPSU., Results: The number of GP referrals to the MAU per day decreased by 1.55 (confidence interval -2.45 to -0.51) patients with the GPSU in place. The number admitted to the hospital per day from MAU decreased by a mean of 0.48 patients but with confidence intervals that included the null hypothesis (-1.39 to 0.44). In comparison, non-GP admissions that were not targeted by the GPSU increased by 3.99 per day (2.64 to 5.33)., Conclusion: An acute GP led service run from within the hospital to provide support to community GPs led to a modest reduction in the number of GP admissions to the MAU, but did not reduce the number of GP admissions to the hospital wards.