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IQ in late adolescence/early adulthood, risk factors in middle-age and later coronary heart disease mortality in men: the Vietnam Experience Study

Record type: Article

OBJECTIVE: Examine the relation between IQ in early adulthood and later coronary heart disease (CHD) mortality, and assess the extent to which established risk factors measured in middle-age might explain this gradient.
DESIGN: Cohort study of 4316 male former Vietnam-era US army personnel with IQ scores (mean age 20.4 years), risk factor data (mean age 38.3 years) and 15 years mortality surveillance.
RESULTS: In age-adjusted analyses, lower IQ scores were associated with an increased rate of CHD mortality (hazard ratio per SD decrease in IQ; 95% confidence interval: 1.34; 1.00, 1.79). Adjustment for later chronic disease (1.22; 0.91, 1.64), behavioural (1.29; 0.95, 1.74) and physiological risk factors (1.19; 0.88, 1.62) led to some attenuation of this gradient. This attenuation was particularly pronounced on adding socioeconomic indices to the multivariable model when the IQ-CHD relation was eliminated (1.05; 0.73, 1.52). A similar pattern of association was apparent when cardiovascular disease was the outcome of interest.
CONCLUSION: High IQ may lead to educational success, well remunerated and higher prestige employment, and this pathway may confer cardio-protection.

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Citation

Batty, G. D., Shipley, M. J., Mortensen, L. H., Gale, C. R. and Deary, I. J. (2008) IQ in late adolescence/early adulthood, risk factors in middle-age and later coronary heart disease mortality in men: the Vietnam Experience Study European Journal Cardiovascular Prevention & Rehabilitation, 15, (3), pp. 359-361.

More information

Published date: June 2008
Keywords: cardiovascular-disease, coronary heart disease, men, risk, cardiovascular, middle age, male, cohort studies, risk factors, cohort, disease, heart, employment, cardiovascular disease, mortality, chronic disease

Identifiers

Local EPrints ID: 60901
URI: http://eprints.soton.ac.uk/id/eprint/60901
ISSN: 1741-8267
PURE UUID: 0b01d9b3-dbc2-4365-bd72-e9658cf354e2

Catalogue record

Date deposited: 24 Sep 2008
Last modified: 17 Jul 2017 14:23

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Contributors

Author: G. D. Batty
Author: M. J. Shipley
Author: L. H. Mortensen
Author: C. R. Gale
Author: I. J. Deary

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