European Journal of Epidemiology

, Volume 28, Issue 8, pp 649–658 | Cite as

Impact of smoking and quitting on cardiovascular outcomes and risk advancement periods among older adults

  • Carolin Gellert
  • Ben Schöttker
  • Heiko Müller
  • Bernd Holleczek
  • Hermann Brenner
CARDIOVASCULAR DISEASE

Abstract

Smoking is an established risk factor for cardiovascular events, such as myocardial infarction, stroke and cardiovascular death. However, most pertinent studies primarily relied on middle aged adults. We aimed to provide empirical evidence on the association of smoking with cardiovascular events and the benefits of smoking cessation in people aged 50 years or older. In a German population-based cohort study detailed information on lifetime smoking history was obtained from 8,807 individuals aged 50–74 years, without previous myocardial infarction (MI) or stroke. Cox proportional hazards regression was applied to estimate the impact of smoking on MI, stroke and cardiovascular death (CVD) as well as on the combined outcome of major cardiovascular events (MI, stroke or CVD). In addition, the impact of smoking and the benefits of smoking cessation were quantified by risk advancement periods (RAP). The cohort included 17.2 % current smokers, 31.7 % former smokers and 51.1 % never smokers. During a mean follow-up of 9.1 years, 261 participants experienced a first MI, 456 had a primary stroke and 274 died of cardiovascular reasons. Compared to never smokers, adjusted hazard ratios (95 % confidence intervals) of current smokers were 2.25 (1.62–3.12), 2.12 (1.65–2.73) and 2.45 (1.76–3.42) and RAPs were 19.3, 9.8 and 8.4 years for MI, stroke and CVD, respectively. Strong dose–response relationships were seen with both current and life-time amount of smoking. Most of the excess risk and risk advancement disappeared within 5 years after smoking cessation. Smoking is a strong risk factor for cardiovascular events even at older age. Smoking cessation is highly and rapidly beneficial also at advanced age.

Keywords

Smoking Myocardial infarction Stroke Aged Cohort studies 

Supplementary material

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Carolin Gellert
    • 1
  • Ben Schöttker
    • 1
  • Heiko Müller
    • 1
  • Bernd Holleczek
    • 2
  • Hermann Brenner
    • 1
    • 3
  1. 1.Division of Clinical Epidemiology and Aging ResearchGerman Cancer Research Center (DKFZ)HeidelbergGermany
  2. 2.Saarland Cancer RegistrySaarbrückenGermany
  3. 3.Division of Clinical Epidemiology and Aging Research (C070)German Cancer Research Center (DKFZ)HeidelbergGermany

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