Does IQ predict cardiovascular disease mortality as strongly as established risk factors? Comparison of effect estimates using the West of Scotland Twenty-07 cohort study.

European Journal of Cardiovascular Prevention and Rehabilitation : Official Journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology
G David BattyGeoff Der

Abstract

To compare the strength of the association between intelligence quotient (IQ) and cardiovascular disease (CVD) mortality with the predictive power for established risk factors. Population-based cohort study of 1145 men and women with IQ test scores, a range of established risk factors, and 20-year mortality surveillance. When CVD mortality was the outcome of interest, the relative index of inequality (sex-adjusted hazard ratio, 95% confidence interval) for the most disadvantaged relative to the advantaged persons was (in descending order of magnitude for the top five risk factors): 5.58 (2.89, 10.8) for cigarette smoking; 3.76 (2.14, 6.61) for IQ; 3.20 (1.85, 5.54) for income; 2.61 (1.49, 4.57) for systolic blood pressure and 2.06 (1.07, 3.99) for physical activity. Mutual adjustment led to some attenuation of these relationships. Similar observations were made in the analyses featuring all deaths where, again, IQ was the second most powerful predictor of mortality risk. In this cohort, lower intelligence scores were associated with increased rates of CVD and total mortality at a level of magnitude greater than most established risk factors.

References

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Sep 14, 2004·BMJ : British Medical Journal·G David Batty, Ian J Deary
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Oct 16, 2007·Journal of Epidemiology and Community Health·G David BattyCatharine R Gale
Jun 6, 2008·European Journal of Cardiovascular Prevention and Rehabilitation : Official Journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology·G David BattyIan J Deary
Jul 29, 2008·Journal of Psychosomatic Research·Beverly A ShipleyIan J Deary

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Citations

May 8, 2013·Environmental Health Perspectives·Kevin Chatham-StephensRichard Fuller
Dec 19, 2013·PloS One·Suzanne J RoweAlbert Tenesa
Feb 20, 2016·Journal of Clinical Epidemiology·Romina Brignardello-PetersenGeorge Tomlinson
May 13, 2015·International Journal of Cardiology·Vageesh Jain
Nov 15, 2014·Journal of Epidemiology and Community Health·Inger AriansenOyvind Næss
Nov 3, 2010·Progress in Neuro-psychopharmacology & Biological Psychiatry·Yue PanNagesh Aragam
Aug 3, 2020·Clinical Research in Cardiology : Official Journal of the German Cardiac Society·Ling LiHeribert Schunkert
Jun 15, 2019·Environment International·Savroop S KullarMaryse F Bouchard

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