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Why do patients having coronary artery bypass grafts have different costs or length of stay? An analysis across ten European countries

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JournalHealth Economics
DatePublished - Aug 2012
Issue numberSuppl. 2
Volume21
Number of pages12
Pages (from-to)77-88
Original languageEnglish

Abstract

We analyse variations in costs or lengths of stay (LoS) for 66,587 patients from ten European countries receiving a coronary artery bypass graft (CABG) procedure. In five of these countries, variations in cost are analysed using log-linear models. In the other five countries, negative binomial regression models are used to explore variations in LoS. We compare how well each country’s Diagnosis Related Group (DRG) system and a set of patient-level characteristics explain these variations. The most important explanatory factors are the total number of diagnoses and procedures, although no clear effects are evident for our CABG-specific diagnostic and procedural variables. Wound infections significantly increase length of stay and costs in all countries. There is no evidence that countries using larger numbers of DRGs to group CABG patients were better at explaining variations in cost or LoS. However, refinements to the construction of DRGs to group CABG patients might recognise first and subsequent CABGs or other specific surgical procedures, such as multiple valve repair.

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EuroDRG supplement

    Research areas

  • diagnosis-related groups; cost analyses; length of stay; CABG

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