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Better long-term survival in young and middle-aged women than in men after a first myocardial infarction between 1985 and 2006: An analysis of 8630 patients in the Northern Sweden MONICA Study
The Northern Sweden MONICA Myocardial Registry, Department of Research, Norrbotten County Council, Luleå.
Department of Medicine and Geriatrics, Skellefteå Hospital.
Department of Medicine, Sunderby Hospital.
Department of Cardiology, Heart Centre, University Hospital, Umeå.
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Number of Authors: 6
2011 (English)In: BMC Cardiovascular Disorders, ISSN 1471-2261, E-ISSN 1471-2261, 1Article in journal (Refereed) Published
Abstract [en]

Background: There is conflicting and only scant evidence on the effect of gender on long-term survival after a myocardial infarction (MI). Our aim was to analyse sex-specific survival of patients for up to 23 years after a first MI in northern Sweden and to describe time trends.Methods: The Northern Sweden MONICA Myocardial Infarction Registry was linked to The Swedish National Cause of Death Registry for a total of 8630 patients, 25 to 64 years of age, 6762 men and 1868 women, with a first MI during 1985-2006. Also deaths before admission to hospital were included. Follow-up ended on August 30, 2008.Results: Median follow-up was 7.1 years, maximum 23 years and the study included 70 072 patient-years. During the follow-up 45.3% of the men and 43.7% of the women had died. Median survival for men was 187 months (95% confidence interval (CI) 179-194) and for women 200 months (95% CI 186-214). The hazard ratio (HR) for all cause mortality after adjustment for age group was 1.092 (1.010-1.18, P = 0.025) for females compared to males, i.e. 9 percent higher survival in women. After excluding subjects who died before reaching hospital HR declined to 1.017 (95%CI 0.93-1.11, P = 0.7). For any duration of follow-up a higher proportion of women were alive, irrespective of age group. The 5-year survivals were 75.3% and 77.5%, in younger (<57 years) men and women and were 65.5% and 66.3% in older (57-64 years) men and women, respectively. For each of four successive cohorts survival improved. Survival time was longer for women than for men in all age groups.Conclusions: Age-adjusted survival was higher among women than men after a first MI and has improved markedly and equally in both men and women over a 23-year period. This difference was due to lower risk for women to die before reaching hospital

Place, publisher, year, edition, pages
2011. 1
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URN: urn:nbn:se:ltu:diva-61259DOI: 10.1186/1471-2261-11-1OAI: oai:DiVA.org:ltu-61259DiVA: diva2:1059966
Available from: 2016-12-27 Created: 2016-12-27 Last updated: 2016-12-27Bibliographically approved

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