Prognostic value of cardiac risk factors and coronary artery calcium screening for all-cause mortality

Leslee J. Shaw, Paolo Raggi, Enrique Schisterman, Daniel S. Berman, Tracy Q. Callister

Research output: Contribution to journalArticle

Abstract

PURPOSE: To develop risk-adjusted multivariable models that included risk factors and coronary calcium scores determined with electron-beam computed tomography (CT) in asymptomatic patients for the prediction of all-cause mortality. MATERIALS AND METHODS: We followed up a cohort of 10,377 asymptomatic individuals undergoing cardiac risk factor evaluation and coronary calcium screening with electron-beam CT. Multivariable Cox proportional hazards models were developed to predict all-cause mortality. Risk-adjusted models incorporated traditional risk factors for coronary disease and coronary calcium scores. RESULTS: Cardiac risk factors such as family history of coronary disease (69%), hypercholesterolemia (62%), hypertension (44%), smoking (40%), and diabetes (9%) were prevalent. The frequency of coronary calcium scores was 57%, 20%, 14%, 6%, and 3% for scores of 10 or less, 11-100, 101-400, 401-1,000, and greater than 1,000, respectively. During a mean follow-up of 5.0 years ± 0.0086 (standard error of the mean), the death rate was 2.4%. In a risk-adjusted model (model χ2 = 388.2, P <.001), coronary calcium was an independent predictor of mortality (P <.001). Risk-adjusted relative risk values for coronary calcium were 1.64, 1.74, 2.54, and 4.03 for scores of 11-100, 101-400, 401-1,000, and greater than 1,000, respectively (P <.001 for all values), as compared with that for a score of 10 or less. Five-year risk-adjusted survival was 99.0% for a calcium score of 10 or less and 95.0% for a score of greater than 1,000 (P <.001). With a receiver operating characteristic curve, the concordance index increased from 0.72 for cardiac risk factors alone to 0.78 (P <.001) when the calcium score was added to a multivariable model for prediction of death. CONCLUSION: This large observational data series shows that coronary calcium provides independent incremental information in addition to traditional risk factors in the prediction of all-cause mortality.

Original languageEnglish (US)
Pages (from-to)826-833
Number of pages8
JournalRadiology
Volume228
Issue number3
DOIs
StatePublished - Sep 1 2003
Externally publishedYes

Fingerprint

Coronary Vessels
Calcium
Mortality
X Ray Computed Tomography
Coronary Disease
Hypercholesterolemia
Proportional Hazards Models
ROC Curve
Smoking
Hypertension
Survival

Keywords

  • Computed tomography (CT), electron beam
  • Conary vessels, calcification

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

Shaw, L. J., Raggi, P., Schisterman, E., Berman, D. S., & Callister, T. Q. (2003). Prognostic value of cardiac risk factors and coronary artery calcium screening for all-cause mortality. Radiology, 228(3), 826-833. https://doi.org/10.1148/radiol.2283021006

Prognostic value of cardiac risk factors and coronary artery calcium screening for all-cause mortality. / Shaw, Leslee J.; Raggi, Paolo; Schisterman, Enrique; Berman, Daniel S.; Callister, Tracy Q.

In: Radiology, Vol. 228, No. 3, 01.09.2003, p. 826-833.

Research output: Contribution to journalArticle

Shaw, LJ, Raggi, P, Schisterman, E, Berman, DS & Callister, TQ 2003, 'Prognostic value of cardiac risk factors and coronary artery calcium screening for all-cause mortality', Radiology, vol. 228, no. 3, pp. 826-833. https://doi.org/10.1148/radiol.2283021006
Shaw, Leslee J. ; Raggi, Paolo ; Schisterman, Enrique ; Berman, Daniel S. ; Callister, Tracy Q. / Prognostic value of cardiac risk factors and coronary artery calcium screening for all-cause mortality. In: Radiology. 2003 ; Vol. 228, No. 3. pp. 826-833.
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abstract = "PURPOSE: To develop risk-adjusted multivariable models that included risk factors and coronary calcium scores determined with electron-beam computed tomography (CT) in asymptomatic patients for the prediction of all-cause mortality. MATERIALS AND METHODS: We followed up a cohort of 10,377 asymptomatic individuals undergoing cardiac risk factor evaluation and coronary calcium screening with electron-beam CT. Multivariable Cox proportional hazards models were developed to predict all-cause mortality. Risk-adjusted models incorporated traditional risk factors for coronary disease and coronary calcium scores. RESULTS: Cardiac risk factors such as family history of coronary disease (69{\%}), hypercholesterolemia (62{\%}), hypertension (44{\%}), smoking (40{\%}), and diabetes (9{\%}) were prevalent. The frequency of coronary calcium scores was 57{\%}, 20{\%}, 14{\%}, 6{\%}, and 3{\%} for scores of 10 or less, 11-100, 101-400, 401-1,000, and greater than 1,000, respectively. During a mean follow-up of 5.0 years ± 0.0086 (standard error of the mean), the death rate was 2.4{\%}. In a risk-adjusted model (model χ2 = 388.2, P <.001), coronary calcium was an independent predictor of mortality (P <.001). Risk-adjusted relative risk values for coronary calcium were 1.64, 1.74, 2.54, and 4.03 for scores of 11-100, 101-400, 401-1,000, and greater than 1,000, respectively (P <.001 for all values), as compared with that for a score of 10 or less. Five-year risk-adjusted survival was 99.0{\%} for a calcium score of 10 or less and 95.0{\%} for a score of greater than 1,000 (P <.001). With a receiver operating characteristic curve, the concordance index increased from 0.72 for cardiac risk factors alone to 0.78 (P <.001) when the calcium score was added to a multivariable model for prediction of death. CONCLUSION: This large observational data series shows that coronary calcium provides independent incremental information in addition to traditional risk factors in the prediction of all-cause mortality.",
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AU - Shaw, Leslee J.

AU - Raggi, Paolo

AU - Schisterman, Enrique

AU - Berman, Daniel S.

AU - Callister, Tracy Q.

PY - 2003/9/1

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N2 - PURPOSE: To develop risk-adjusted multivariable models that included risk factors and coronary calcium scores determined with electron-beam computed tomography (CT) in asymptomatic patients for the prediction of all-cause mortality. MATERIALS AND METHODS: We followed up a cohort of 10,377 asymptomatic individuals undergoing cardiac risk factor evaluation and coronary calcium screening with electron-beam CT. Multivariable Cox proportional hazards models were developed to predict all-cause mortality. Risk-adjusted models incorporated traditional risk factors for coronary disease and coronary calcium scores. RESULTS: Cardiac risk factors such as family history of coronary disease (69%), hypercholesterolemia (62%), hypertension (44%), smoking (40%), and diabetes (9%) were prevalent. The frequency of coronary calcium scores was 57%, 20%, 14%, 6%, and 3% for scores of 10 or less, 11-100, 101-400, 401-1,000, and greater than 1,000, respectively. During a mean follow-up of 5.0 years ± 0.0086 (standard error of the mean), the death rate was 2.4%. In a risk-adjusted model (model χ2 = 388.2, P <.001), coronary calcium was an independent predictor of mortality (P <.001). Risk-adjusted relative risk values for coronary calcium were 1.64, 1.74, 2.54, and 4.03 for scores of 11-100, 101-400, 401-1,000, and greater than 1,000, respectively (P <.001 for all values), as compared with that for a score of 10 or less. Five-year risk-adjusted survival was 99.0% for a calcium score of 10 or less and 95.0% for a score of greater than 1,000 (P <.001). With a receiver operating characteristic curve, the concordance index increased from 0.72 for cardiac risk factors alone to 0.78 (P <.001) when the calcium score was added to a multivariable model for prediction of death. CONCLUSION: This large observational data series shows that coronary calcium provides independent incremental information in addition to traditional risk factors in the prediction of all-cause mortality.

AB - PURPOSE: To develop risk-adjusted multivariable models that included risk factors and coronary calcium scores determined with electron-beam computed tomography (CT) in asymptomatic patients for the prediction of all-cause mortality. MATERIALS AND METHODS: We followed up a cohort of 10,377 asymptomatic individuals undergoing cardiac risk factor evaluation and coronary calcium screening with electron-beam CT. Multivariable Cox proportional hazards models were developed to predict all-cause mortality. Risk-adjusted models incorporated traditional risk factors for coronary disease and coronary calcium scores. RESULTS: Cardiac risk factors such as family history of coronary disease (69%), hypercholesterolemia (62%), hypertension (44%), smoking (40%), and diabetes (9%) were prevalent. The frequency of coronary calcium scores was 57%, 20%, 14%, 6%, and 3% for scores of 10 or less, 11-100, 101-400, 401-1,000, and greater than 1,000, respectively. During a mean follow-up of 5.0 years ± 0.0086 (standard error of the mean), the death rate was 2.4%. In a risk-adjusted model (model χ2 = 388.2, P <.001), coronary calcium was an independent predictor of mortality (P <.001). Risk-adjusted relative risk values for coronary calcium were 1.64, 1.74, 2.54, and 4.03 for scores of 11-100, 101-400, 401-1,000, and greater than 1,000, respectively (P <.001 for all values), as compared with that for a score of 10 or less. Five-year risk-adjusted survival was 99.0% for a calcium score of 10 or less and 95.0% for a score of greater than 1,000 (P <.001). With a receiver operating characteristic curve, the concordance index increased from 0.72 for cardiac risk factors alone to 0.78 (P <.001) when the calcium score was added to a multivariable model for prediction of death. CONCLUSION: This large observational data series shows that coronary calcium provides independent incremental information in addition to traditional risk factors in the prediction of all-cause mortality.

KW - Computed tomography (CT), electron beam

KW - Conary vessels, calcification

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