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Discordant age and sex-specific trends in the incidence of a first coronary heart disease event in Western Australia from 1996 to 2007
journal contribution
posted on 2011-03-01, 00:00 authored by T Briffa, L Nedkoff, Anna PeetersAnna Peeters, A Tonkin, J Hung, S C Ridout, M KnuimanOBJECTIVE: To determine age- and sex-specific population trends in fatal and non-fatal first coronary heart disease (CHD) events in Western Australia from 1996 to 2007. DESIGN: Longitudinal retrospective population study. SETTING: State-wide population. PATIENTS: All residents aged 35-84 years during 1996-2007 who died or were hospitalised with a principal diagnosis of acute CHD. DATA SOURCES: Person-linked file of mortality and morbidity records. MAIN OUTCOME MEASURES: Age-standardised (35-84 years) and age-specific (35-54, 55-69, 70-84 years) rates by gender for a first CHD event were calculated with a 10-year lead-in period to define first events. RESULTS: From 1996 to 2007 there were 36 631 first CHD events, including 8518 (23%) fatal cases in those aged 35-84 years. Overall, age-adjusted rates for fatal first CHD declined 5.3%/year in men (95% CI -6.1% to -4.6%) and 6.5%/year in women (95% CI -7.5% to -5.5%). However, age-specific fatal first CHD rates were neutral in both men aged 35-54 years (0.1%/year; 95% CI -1.8% to 2.1%) and women of the same age, (-1.6%/year; 95% CI -5.6% to 2.5%). Age-specific trends in non-fatal CHD rates reflected the same trends in fatal CHD events in men and women, with rates reportedly increasing in women aged 35-54 years (2.5%/year (95% CI 1.1% to 3.9%). CONCLUSION: The age-specific decline in fatal and non-fatal first CHD rates in older men and women was not observed in those aged 35-54 years. These novel findings provide evidence for a levelling in the CHD incidence rates in younger adults and puts renewed importance on primary prevention in this group.
History
Journal
HeartVolume
97Issue
5Pagination
400 - 404Publisher
BMJ Group PublishingLocation
London, Eng.Publisher DOI
eISSN
1468-201XLanguage
engPublication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
2011, BMJ Publishing GroupUsage metrics
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AdultAge DistributionAgedAged, 80 and overCoronary DiseaseFemaleHumansIncidenceMaleMiddle AgedRetrospective StudiesSex DistributionWestern AustraliaScience & TechnologyLife Sciences & BiomedicineCardiac & Cardiovascular SystemsCardiovascular System & CardiologyACUTE MYOCARDIAL-INFARCTIONCARDIOVASCULAR-DISEASEPOPULATION TRENDSMORTALITYDECLINEOBESITYRISKRATESUSPREVALENCE
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