Impact of Major Cardiovascular Disease Risk Factors, Particularly in Combination, on 22-Year Mortality in Women and Men

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Abstract

Background

The appropriateness of current cardiovascular disease (CVD) risk factor guidelines in women continues to be debated.

Objective

To present new data on the appropriateness of current CVD risk factor guidelines, for women and men, from long-term follow-up of a large population sample.

Methods

Cardiovascular disease risk factor status according to current clinical guidelines and long-term impact on mortality were determined in 8686 women and 10 503 men aged 40 to 64 years at baseline from the Chicago Heart Association Detection Project in Industry; average follow-up was 22 years.

Results

At baseline, only 6.6% of women and 4.8% of men had desirable levels for all 3 major risk factors (cholesterol level, <5.20 mmol/L [<200 mg/dL]; systolic and diastolic blood pressure, <120 and <80 mm Hg, respectively; and nonsmoking). With control for age, race, and other risk factors, each major risk factor considered separately was associated with increased risk of death for women and men. In analyses of combinations of major risk factors, risk increased with number of risk factors. Relative risks (RRs) associated with any 2 or all 3 risk factors were similar: for coronary heart disease mortality in women, RR=5.72 (95% confidence interval [CI], 2.35-13.93), and in men, RR=5.51 (95% CI, 3.10-9.77); for CVD mortality in women, RR=4.54 (95% CI, 2.33-8.84), and in men, RR=4.12 (95% CI, 2.56-6.37); and for all-cause mortality in women, RR=2.34 (95% CI, 1.73-3.15), and in men, RR=3.20 (95% CI, 2.47-4.14). Absolute excess risks were high in women and men with any 2 or all 3 major risk factors.

Conclusions

Combinations of major CVD risk factors place women and men at high relative, absolute, and absolute excess risk of coronary heart disease, CVD, and all-cause mortality. These findings support the value of (1) measurement of major CVD risk factors, especially in combination, for assessing long-term mortality risk and (2) current advice to match treatment intensity to the level of CVD risk in both women and men.

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