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Research ArticleOriginal Research

Original and REGICOR Framingham Functions in a Nondiabetic Population of a Spanish Health Care Center: A Validation Study

Francisco Buitrago, Juan Ignacio Calvo-Hueros, Lourdes Cañón-Barroso, Gerónimo Pozuelos-Estrada, Luis Molina-Martínez, Manuel Espigares-Arroyo, Juan Antonio Galán-González and Francisco J. Lillo-Bravo
The Annals of Family Medicine September 2011, 9 (5) 431-438; DOI: https://doi.org/10.1370/afm.1287
Francisco Buitrago
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Juan Ignacio Calvo-Hueros
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Lourdes Cañón-Barroso
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Gerónimo Pozuelos-Estrada
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Luis Molina-Martínez
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Manuel Espigares-Arroyo
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Juan Antonio Galán-González
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Francisco J. Lillo-Bravo
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  • For correspondence: fbuitragor@meditex.es
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Abstract

PURPOSE Risk functions can help general practitioners identify patients at high cardiovascular risk, but overprediction inevitably leads to a disproportionate number of patients being targeted for treatment. To assess predicted cardiovascular risk, we analyzed the 10-year performance of the original and REGICOR Framingham coronary risk functions in nondiabetic patients.

METHODS Ours was a longitudinal, observational study of a retrospective cohort of patients observed for 10 years in primary care practices in Badajoz, Spain. Our cohort comprised 447 nondiabetic patients aged 35 to 74 years who had no evidence of cardiovascular disease and were not on lipid-lowering or antihypertensive therapy. We assessed the patients’ 10-year coronary risk measurement from the time of their recruitment. We also estimated the percentage of patients who were candidates for antihypertensive and lipid-lowering therapy.

RESULTS The actual incidence rate of coronary events was 6.7%. The original Framingham equation overpredicted risk by 73%, whereas the REGICOR Framingham function underpredicted risk by 64%. The Brier scores were 0.06364 and 0.06093 (P = .365) for the original Framingham and REGICOR Framingham functions, respectively, and the remaining discrimination and calibration parameters were also highly similar for both functions. The original Framingham function classified 14.8% of the population as high risk and the REGICOR Framingham function classified 6.9%. The proportions of patients who, according to the original Framingham and REGICOR functions, would be candidates for lipid-lowering therapy were 14.3% and 6.7%, and for antihypertensive therapy they were 12.5% and 7.8%, respectively.

CONCLUSION The original Framingham equation overestimated coronary risk whereas the REGICOR Framingham function underestimated it. The original Framingham function selected a greater percentage of candidates for antihypertensive and lipid-lowering therapy.

  • Cardiovascular risk functions
  • coronary disease
  • REGICOR risk chart
  • Framingham function
  • hypolipidemic agents
  • antihypertensive agents
  • Received for publication November 16, 2010.
  • Revision received May 6, 2011.
  • Accepted for publication May 10, 2011.
  • © Annals of Family Medicine, Inc.
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The Annals of Family Medicine: 9 (5)
The Annals of Family Medicine
Vol. 9, Issue 5
September/October 2011
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Original and REGICOR Framingham Functions in a Nondiabetic Population of a Spanish Health Care Center: A Validation Study
Francisco Buitrago, Juan Ignacio Calvo-Hueros, Lourdes Cañón-Barroso, Gerónimo Pozuelos-Estrada, Luis Molina-Martínez, Manuel Espigares-Arroyo, Juan Antonio Galán-González, Francisco J. Lillo-Bravo
The Annals of Family Medicine Sep 2011, 9 (5) 431-438; DOI: 10.1370/afm.1287

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Original and REGICOR Framingham Functions in a Nondiabetic Population of a Spanish Health Care Center: A Validation Study
Francisco Buitrago, Juan Ignacio Calvo-Hueros, Lourdes Cañón-Barroso, Gerónimo Pozuelos-Estrada, Luis Molina-Martínez, Manuel Espigares-Arroyo, Juan Antonio Galán-González, Francisco J. Lillo-Bravo
The Annals of Family Medicine Sep 2011, 9 (5) 431-438; DOI: 10.1370/afm.1287
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