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Sex Differences in Treatments, Relative Survival, and Excess Mortality Following Acute Myocardial Infarction: National Cohort Study Using the SWEDEHEART Registry
University of Leeds, England.
University of Leeds, England; York Teaching Hospital NHS Fdn Trust, England.
University of Leeds, England.
University of Leicester, England.
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2017 (English)In: Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, ISSN 2047-9980, E-ISSN 2047-9980, Vol. 6, no 12, article id e007123Article in journal (Refereed) Published
Abstract [en]

Background-This study assessed sex differences in treatments, all-cause mortality, relative survival, and excess mortality following acute myocardial infarction. Methods and Results-A population-based cohort of all hospitals providing acute myocardial infarction care in Sweden (SWEDEHEART [Swedish Web System for Enhancement and Development of Evidence-Based Care in Heart Disease Evaluated According to Recommended Therapies]) from 2003 to 2013 was included in the analysis. Excess mortality rate ratios (EMRRs), adjusted for clinical characteristics and guideline-indicated treatments after matching by age, sex, and year to background mortality data, were estimated. Although there were no sex differences in all-cause mortality adjusted for age, year of hospitalization, and comorbidities for ST-segment-elevation myocardial infarction (STEMI) and non-STEMI at 1 year (mortality rate ratio: 1.01 [95% confidence interval (CI), 0.96-1.05] and 0.97 [95% CI, 0.95-.99], respectively) and 5 years (mortality rate ratio: 1.03 [95% CI, 0.99-1.07] and 0.97 [95% CI, 0.95-.99], respectively), excess mortality was higher among women compared with men for STEMI and non-STEMI at 1 year (EMRR: 1.89 [95% CI, 1.66-2.16] and 1.20 [95% CI, 1.16-1.24], respectively) and 5 years (EMRR: 1.60 [95% CI, 1.48-1.72] and 1.26 [95% CI, 1.21-1.32], respectively). After further adjustment for the use of guideline-indicated treatments, excess mortality among women with non-STEMI was not significant at 1 year (EMRR: 1.01 [95% CI, 0.97-1.04]) and slightly higher at 5 years (EMRR: 1.07 [95% CI, 1.02-1.12]). For STEMI, adjustment for treatments attenuated the excess mortality for women at 1 year (EMRR: 1.43 [95% CI, 1.26-1.62]) and 5 years (EMRR: 1.31 [95% CI, 1.19-1.43]). Conclusions-Women with acute myocardial infarction did not have statistically different all-cause mortality, but had higher excess mortality compared with men that was attenuated after adjustment for the use of guideline-indicated treatments. This suggests that improved adherence to guideline recommendations for the treatment of acute myocardial infarction may reduce premature cardiovascular death among women.

Place, publisher, year, edition, pages
WILEY , 2017. Vol. 6, no 12, article id e007123
Keywords [en]
excess mortality; mortality; non-ST-segment-elevation acute coronary syndrome; relative survival; sex; ST-segment-elevation myocardial infarction; survival
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:liu:diva-144571DOI: 10.1161/JAHA.117.007123ISI: 000418951100041PubMedID: 29242184OAI: oai:DiVA.org:liu-144571DiVA, id: diva2:1178273
Note

Funding Agencies|Swedish Heart and Lung Foundation; Stockholm County Council; Karolinska Institute; British Heart Foundation [PG/13/81/30474]

Available from: 2018-01-29 Created: 2018-01-29 Last updated: 2018-04-18

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Sederholm Lawesson, SofiaAlfredsson, Joakim
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Division of Cardiovascular MedicineDepartment of Cardiology in LinköpingFaculty of Medicine and Health Sciences
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