Cross vascular risk for first and recurrent hospitalised atherothrombosis determined retrospectively from linked data

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Abstract

Objectives: To determine the sex-specific and age-specific risk ratios for the first-ever and recurrent hospitalisation for cerebrovascular, coronary and peripheral arterial disease in persons with other vascular history versus without other vascular history in Western Australia from 2005to 2007. Design: Cross-sectional linkage study. Setting: Hospitalised population in a representative Australian State. Participants: All persons aged 34-85 years between 1 January 2005 and 31 December 2007 were hospitalised with a principal diagnosis of atherothrombosis. Data sources: Person-linked file of statutory-collected administrative morbidity and mortality records. Main outcome measures: Sex-specific and agespecific risk ratios for the first-ever and recurrent hospitalisations for symptomatic atherothrombosis of the brain, coronary and periphery using a 15-year look-back period lead to the determining of prior events. Results: Over 3 years, 40 877 (66% men; 55% firstever) were hospitalised for atherothrombosis. For each arterial territory, age-specific recurrent rates were higher than the corresponding first-ever rates, with the biggest difference seen in the youngest age groups. For all types of first-ever atherothrombosis, the rates were higher in those with other vascular history and the risk ratios declined with an advancing age (trend: all p1 even for 75-84 years old. However, for recurrent events, the rates were marginally higher in those with other vascular history and no risk ratio age trend was apparent with several not significantly >1 (trend: all p>0.13). Conclusions: This study of hospitalised atherothrombosis suggests first-events predominate and that the risk of further events in the same or other arterial territory is very high for all ages and both sexes, accentuating the necessity for an early and sustained active prevention.
Original languageEnglish
Pages (from-to)8pp
JournalBMJ Open
Volume3
Issue number11
DOIs
Publication statusPublished - 2013

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