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Article Abstract
Background: Acute myocardial infarction (AMI) has poorer outcomes in disadvantaged populations such as those in regional and remote locations. We compared long-term outcomes associated with presentation to regional or remote hospitals among AMI patients.
Methods And Results: Administrative claims data from New South Wales (27% regional and remote residents) was used to identify patients >18 years admitted to any NSW hospital with a principal diagnosis of AMI (ICD10 codes: I21·0-I21·4) between 01/07/2004 and 30/06/2008. Hospital of presentation location with a population of <250,000 was defined as regional and remote while hospitals with a population >250,000 were deemed urban. Receipt of revascularisation and mortality were analysed and adjusted for age, comorbidities and previous revascularisation. Patients were censored at death or end of the follow-up period (31 December 2009). 39,798 patients were identified with 9,393 (23.6%) regional and remote presenters. In multivariable models, regional and remote presentation was associated with reduced rates of revascularisation (OR 0.30 95%CI 0.28-0.32; p<0.001), no impact on overall mortality (HR 1.04 95%CI 0.99-1.02; p=0.11), but with increased mortality for patients presenting with STEMI (HR 1.14; 95% CI 1.06-1.23; p<0.001). The propensity analysis was consistent with these findings.
Conclusions: Presentation to a regional and remote hospital was associated with lower revascularisation rates following AMI, but with a higher long-term mortality if presenting with ST segment elevation.
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