European Heart Journal Advance Access published online on January 13, 2009
European Heart Journal, doi:10.1093/eurheartj/ehn554
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Modelling the decreasing coronary heart disease mortality in Sweden between 1986 and 2002
1 Department of Emergency and Cardiovascular Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
2 Department of Pharmacology and Therapeutics, Trinity Centre for Health Sciences, St James’s Hospital, Dublin, Ireland
3 Department of Public Health, University of Liverpool, Liverpool, UK
Received 14 July 2008; revised 24 October 2008; accepted 20 November 2008.
* Corresponding author. Tel: +46 313436752, Fax: +46 31258933, Email: lena.m.bjorck{at}vgregion.se
Aims: Coronary heart disease (CHD) mortality rates have been falling in Sweden since the 1980s. We used the previously validated IMPACT CHD model to examine how much of the mortality decrease in Sweden between 1986 and 2002 could be attributed to medical and surgical treatments, and how much to changes in cardiovascular risk factors.
Methods and results: The IMPACT mortality model was used to combine and analyse data on uptake and effectiveness of cardiological treatments and risk factor trends in Sweden. The main data sources were official statistics, national quality of care registers, published trials and meta-analyses, and national population surveys. Between 1986 and 2002, CHD mortality rates in Sweden decreased by 53.4% in men and 52.0% in women aged 25–84 years. This resulted in 13 180 fewer deaths in 2002. Approximately 36% of this decrease was attributed to treatments in individuals and 55% to population risk factor reductions. Adverse trends were seen for diabetes and overweight.
Conclusion: More than half of the substantial CHD mortality decrease in Sweden between 1986 and 2002 was attributable to reductions in major risk factors, mainly a large decrease in total serum cholesterol. These findings emphasize the value of a comprehensive strategy that promotes primary prevention and evidence-based medical treatments, especially secondary prevention.
Key Words: Coronary disease • Mortality • Risk factors • Treatment • Registries • Sweden
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