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Cardiovascular mortality in Russia and other countries
David Leon London School of Hygiene & Tropical Medicine, Arctic University of Norway, UiT Cardiovascular Epidemiology Course Kazan, April 2015
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Global trends in life-expectancy at birth
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Trends in life expectancy at birth by global region 1950-2010
World
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Trends in life expectancy at birth by global region 1950-2010
N America Oceania Latin America Asia
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Trends in life expectancy at birth by global region 1950-2010
Europe Africa
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Recent European trends
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Trends in European life expectancy 1970-2009
Source : Leon, IJE, 2011
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Life expectancy at birth 1955 - 2010
EU members (pre-2005) Russia
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Life expectancy at birth 1955 - 2010
Russia (2011) UK 79 (2011) Russia (2011) UK 83 (2011) Ru and Tatarstan from Evgueny Andreev. UK and Norway from GBD
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Life expectancy at birth 1955 - 2010
EU members (pre-2005) Russia Gorbachev anti-alcohol campaign Gorbachev anti-alcohol campaign
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Life expectancy at birth 1955 - 2010
EU members (pre-2005) Russia Collapse of Soviet Union Collapse of Soviet Union
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Life expectancy at birth 1955 - 2010
EU members (pre-2005) Russia Chaos and economic liberalisation Chaos and economic liberalisation
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Life expectancy at birth 1955 - 2010
EU members (pre-2005) Foreign currency crisis Russia Foreign currency crisis
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Life expectancy at birth 1955 - 2010
EU members (pre-2005) Putin elected Russia Putin elected
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Hazardous alcohol consumption strongly implicated in fluctuations
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Strong evidence that alcohol drives fluctuations
in male life expectancy in Russia Source : V. Shkolnikov and E. Andreev
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Cardiovascular Disease
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Two major classes of cardiovascular mortality
Ischaemic Heart Disease (includes heart attack / myocardial infarction) Stroke (cerebrovascular event/accident)
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Cardiovascular disease makes a major
contribution to Russia’s low life expectancy Life expectancy at birth (years) in 2009 Men Women United Kingdom 78.1 82.3 Russian Federation 62.7 74.7 Difference (UK minus Russia) 15.4 7.6 Contribution of CVD to difference 7.5 6.3 Contribution of IHD to difference 4.0 3.2 Cardiovascular disease accounts for 49% of life expectancy difference between UK and Russia and 83% for women
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International trends in cardiovascular mortality rates in adults from 1950 (30+ years)
Source : M. Ezzati et al Nat.Rev.Cardiol (In Press)
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Men Women
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Men Women
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Russia and other former communist countries are different
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Men Women
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Explaining long term trends is difficult !
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Classic Risk Factors for IHD
Cholesterol (low-density lipoprotein) Smoking Obesity / Physical activity Blood pressure Diabetes
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Revolution in treatment of cardiovascular disease
Probably relatively little until the mid 1960s but then things gradually changed Hypertension Thiazide diuretics Beta blockers ACE inhibitors Lipids Statins Arrythmias Calcium channel blockers Pacemakers Catheter ablation Acute myocardial infarction Anti-arrhythmics Thrombolysis, now primary percutaneous coronary intervention Anti-platelet agents Secondary prevention with beta blockers, ACE inhibitors, anti-platelet agents, and statins
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What explains the improvement in cardiovascular outcomes in western countries after 1980 ? Findings using the “IMPACT” model Note : This is a “model”
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Explaining the fall in IHD deaths in the USA 1980-2000
NEJM 2007; 356: 2388. Risk Factors worse +17% Obesity (increase) % Diabetes (increase) % Risk Factors better -61% Population BP fall -20% Smoking % Cholesterol (diet) -24% Physical activity -5% Treatments % AMI treatments % Secondary prevention -11% Heart failure % Angina:CABG & PTCA -5% Hypertension therapies -7% Statins (primary prevention) -5% Unexplained % CHD deaths 341,745 fewer deaths in 1980 2000
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IHD mortality fall Poland 1991-2005
P. Bandoz et al BMJ 2012 Risk Factors worse +7% Obesity (increase) % Diabetes (increase) % Risk Factors better -66% Cholesterol (diet) % Smoking % Physical activity -10% Population BP fall 0% (Men Women) Treatments % AMI treatments % Unstable angina % Secondary prevention % Heart failure % Angina: CABG surgery % Angina ASA % Hypertension therapies % Statins (Primary prevention) % Unexplained % 26,200 fewer deaths in 2005 1991 2005 30
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Understanding Ischaemic Heart Disease in Russia
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Understanding Ischaemic Heart Disease in Russia
... Inadequate data ....
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Smoking
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Estimated contribution of smoking to circulatory disease mortality at ages years 33% male deaths 3% female deaths [in 2010] The percentages were from report sent to DL on 14 May 2013 of updated analyses for 2010 Source :
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But … smoking cannot explain massive fluctuations over time
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Ischaemic heart disease mortality, in Russia, 1970 – 2010 (age <65 years)
Men Age-standardised rate per 100,000 Russia UK Norway Source : WHO HFA database
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Trends of adult smoking rates in Russia, 1992–2009
Source : Lunze K &Migliorini L. BMC Public Health 2013;13:64
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Smoking cannot explain why Russian women have such high rates compared to other countries
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Hypertension High rates in Russia compared to other European countries
Poor rates of control Likely to be an important factor Note : no good national data available
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Paradoxical lipid profile relative to other countries
Prevalence of raised total cholesterol not high Levels of low density lipoprotein (LDL - bad cholesterol) tend to be average or below average Levels of high density lipoprotein (HDL - “good” cholesterol) above average Note : no good national data available
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Lipid profiles in Russia, USA and Finland
“Good” cholesterol marker “Bad” cholesterol marker Source : M. Averina et al Clin.Chem. 50 (2): , 2004
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Classic risk factors do not explain international differences
10-year Norwegian myocardial infarction risk score Men Women Arkhangelsk study ( ) 33.8 3.9 Finnmark study ( ) 55.3 9.6 Tromsø study ( ) 45.9 9.8
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Hazardous Drinking and CVD fluctuations
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Source : Data provided by Evgueny Andreev
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Heart disease (IHD) mortality in Russia is not typical
Lipid profiles are not very pro-atherogenic relative to other countries although good data limited Very high excess burden cardiovasclar mortality at working ages relative to other countries Massive fluctuations in ischaemic heart disease mortality over time Hazardous alcohol drinking implicated (mechanism unclear) Many deaths attributed to “other ischaemic heart disease” [ICD10 I24]. Is there misclassification ?
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Conclusion Reasons for Russia’s very high mortality from cardiovascular disease not fully understood Contribution of barriers to effective treatment unknown Alcohol effects are a challenge to the dominant view that it is cardioprotective
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Спасибо Thank you
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