All-cause mortality by age and gender based on coronary artery calcium scores

Rine Nakanishi, Dong Li, Michael Blaha, Seamus Whelton, Sirous Darabian, Ferdinand R. Flores, Christopher Dailing, Roger S Blumenthal, Khurram Nasir, Daniel S. Berman, Matthew J. Budoff

Research output: Contribution to journalArticle

Abstract

AIMS: Although coronary artery calcium (CAC) has been established as a robust tool for predicting total mortality during intermediate follow-up, less is known about the long-term predictive value of CAC.

METHODS AND RESULTS: This study included 13 092 asymptomatic patients without known cardiovascular disease who underwent a clinically indicated CAC scan. CAC was categorized as an Agatson score of 0, 1-99, 100-399, and ≥400. We used multivariable Cox proportional hazards to calculate adjusted hazard ratios (HRs) for mortality stratified by age (younger, intermediate, or older) and gender. The mean age of participants was 58 ± 11 years and 67% were men. During a median follow-up of 11.0 ± 3.2 years, there were 522 deaths (4.0%). Compared with CAC = 0, increasing CAC was associated with higher mortality rate: 1-99 [HR: 1.5, 95% confidence interval (95% CI): 1.1-2.1]; 100-399 (HR: 1.8, 95% CI: 1.3-2.5); ≥400 (HR: 2.6, 95% CI: 1.9-3.6). Relative risk according to CAC category did not differ between genders. The strongest associations between CAC and mortality were observed for young and intermediate age participants. Nonetheless, the mortality rate of the older patients with CAC = 0 was far lower than that of the general US population. CAC was more predictive of long-term (15 years) than intermediate-term (5 years) mortality for men [receiver operator characteristics (ROC): 0.723 vs. 0.702] and women (ROC: 0.69 vs. 0.65).

CONCLUSION: CAC is strongly associated with the long-term risk of mortality in young- and middle-aged men and women. In older patients, the long-term risk stratification of CAC is lower, due principally to increased mortality rate in patients with low calcium scores; however, even in the older patients, those with absent or low CAC are at a significantly lower risk of mortality compared with the general population.

Original languageEnglish (US)
Pages (from-to)1305-1314
Number of pages10
JournalEuropean Heart Journal Cardiovascular Imaging
Volume17
Issue number11
StatePublished - Nov 1 2016
Externally publishedYes

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Coronary Vessels
Calcium
Mortality
Confidence Intervals
Population
Cardiovascular Diseases

Keywords

  • Age
  • Coronary artery calcium score
  • Gender
  • Long-term mortality
  • Mortality risk

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

Cite this

Nakanishi, R., Li, D., Blaha, M., Whelton, S., Darabian, S., Flores, F. R., ... Budoff, M. J. (2016). All-cause mortality by age and gender based on coronary artery calcium scores. European Heart Journal Cardiovascular Imaging, 17(11), 1305-1314.

All-cause mortality by age and gender based on coronary artery calcium scores. / Nakanishi, Rine; Li, Dong; Blaha, Michael; Whelton, Seamus; Darabian, Sirous; Flores, Ferdinand R.; Dailing, Christopher; Blumenthal, Roger S; Nasir, Khurram; Berman, Daniel S.; Budoff, Matthew J.

In: European Heart Journal Cardiovascular Imaging, Vol. 17, No. 11, 01.11.2016, p. 1305-1314.

Research output: Contribution to journalArticle

Nakanishi, R, Li, D, Blaha, M, Whelton, S, Darabian, S, Flores, FR, Dailing, C, Blumenthal, RS, Nasir, K, Berman, DS & Budoff, MJ 2016, 'All-cause mortality by age and gender based on coronary artery calcium scores', European Heart Journal Cardiovascular Imaging, vol. 17, no. 11, pp. 1305-1314.
Nakanishi, Rine ; Li, Dong ; Blaha, Michael ; Whelton, Seamus ; Darabian, Sirous ; Flores, Ferdinand R. ; Dailing, Christopher ; Blumenthal, Roger S ; Nasir, Khurram ; Berman, Daniel S. ; Budoff, Matthew J. / All-cause mortality by age and gender based on coronary artery calcium scores. In: European Heart Journal Cardiovascular Imaging. 2016 ; Vol. 17, No. 11. pp. 1305-1314.
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AU - Li, Dong

AU - Blaha, Michael

AU - Whelton, Seamus

AU - Darabian, Sirous

AU - Flores, Ferdinand R.

AU - Dailing, Christopher

AU - Blumenthal, Roger S

AU - Nasir, Khurram

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AU - Budoff, Matthew J.

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N2 - AIMS: Although coronary artery calcium (CAC) has been established as a robust tool for predicting total mortality during intermediate follow-up, less is known about the long-term predictive value of CAC.METHODS AND RESULTS: This study included 13 092 asymptomatic patients without known cardiovascular disease who underwent a clinically indicated CAC scan. CAC was categorized as an Agatson score of 0, 1-99, 100-399, and ≥400. We used multivariable Cox proportional hazards to calculate adjusted hazard ratios (HRs) for mortality stratified by age (younger, intermediate, or older) and gender. The mean age of participants was 58 ± 11 years and 67% were men. During a median follow-up of 11.0 ± 3.2 years, there were 522 deaths (4.0%). Compared with CAC = 0, increasing CAC was associated with higher mortality rate: 1-99 [HR: 1.5, 95% confidence interval (95% CI): 1.1-2.1]; 100-399 (HR: 1.8, 95% CI: 1.3-2.5); ≥400 (HR: 2.6, 95% CI: 1.9-3.6). Relative risk according to CAC category did not differ between genders. The strongest associations between CAC and mortality were observed for young and intermediate age participants. Nonetheless, the mortality rate of the older patients with CAC = 0 was far lower than that of the general US population. CAC was more predictive of long-term (15 years) than intermediate-term (5 years) mortality for men [receiver operator characteristics (ROC): 0.723 vs. 0.702] and women (ROC: 0.69 vs. 0.65).CONCLUSION: CAC is strongly associated with the long-term risk of mortality in young- and middle-aged men and women. In older patients, the long-term risk stratification of CAC is lower, due principally to increased mortality rate in patients with low calcium scores; however, even in the older patients, those with absent or low CAC are at a significantly lower risk of mortality compared with the general population.

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