TY - JOUR
T1 - Validation of the health ABC heart failure model for incident heart failure risk prediction
T2 - The Cardiovascular Health Study
AU - Kalogeropoulos, Andreas
AU - Psaty, Bruce M.
AU - Vasan, Ramachandran S.
AU - Georgiopoulou, Vasiliki
AU - Smith, Andrew L.
AU - Smith, Nicholas L.
AU - Kritchevsky, Stephen B.
AU - Wilson, Peter W.F.
AU - Newman, Anne B.
AU - Harris, Tamara B.
AU - Butler, Javed
PY - 2010/7
Y1 - 2010/7
N2 - Background-The recently developed and internally validated Health ABC HF model uses 9 routinely available clinical variables to determine incident heart failure risk. In this study, we sought to externally validate the Health ABC HF model. Methods and Results-Observed 5-year incidence of heart failure, defined as first hospitalization for new-onset heart failure, was compared with 5-year risk estimates derived from the Health ABC HF model among participants without heart failure at baseline in the Cardiovascular Health Study. During follow-up, 400 of 5335 (7.5%) participants developed heart failure over 5 years versus 364 (6.8%) predicted by the Health ABC HF model (predicted-to-observed ratio, 0.90). Observed versus predicted 5-year heart failure probabilities were 3.2% versus 2.8%, 9.0% versus 7.0%, 15.9% versus 13.7%, and 24.6% versus 30.8% for the ≤5%, 5% to 10%, 10% to 20%, and ≥20% 5-year risk categories, respectively. The Hosmer-Lemeshow X2 was 14.72 (degrees of freedom, 10; P=0.14), and the C index was 0.74 (95% CI, 0.72 to 0.76). Calibration and discrimination demonstrated adequate performance across sex and race overall; however, risk was underestimated in white men, especially in the 5% to 10% risk category. Model performance was optimal when participants with normal left ventricular function at baseline were assessed separately. Performance was consistent across age groups. Analyses with death as a competing risk yielded similar results. Conclusions-The Health ABC HF model adequately predicted 5-year heart failure risk in a large community-based study, providing support for the external validity of the model. This tool may be used to identify individuals to whom to target heart failure prevention efforts.
AB - Background-The recently developed and internally validated Health ABC HF model uses 9 routinely available clinical variables to determine incident heart failure risk. In this study, we sought to externally validate the Health ABC HF model. Methods and Results-Observed 5-year incidence of heart failure, defined as first hospitalization for new-onset heart failure, was compared with 5-year risk estimates derived from the Health ABC HF model among participants without heart failure at baseline in the Cardiovascular Health Study. During follow-up, 400 of 5335 (7.5%) participants developed heart failure over 5 years versus 364 (6.8%) predicted by the Health ABC HF model (predicted-to-observed ratio, 0.90). Observed versus predicted 5-year heart failure probabilities were 3.2% versus 2.8%, 9.0% versus 7.0%, 15.9% versus 13.7%, and 24.6% versus 30.8% for the ≤5%, 5% to 10%, 10% to 20%, and ≥20% 5-year risk categories, respectively. The Hosmer-Lemeshow X2 was 14.72 (degrees of freedom, 10; P=0.14), and the C index was 0.74 (95% CI, 0.72 to 0.76). Calibration and discrimination demonstrated adequate performance across sex and race overall; however, risk was underestimated in white men, especially in the 5% to 10% risk category. Model performance was optimal when participants with normal left ventricular function at baseline were assessed separately. Performance was consistent across age groups. Analyses with death as a competing risk yielded similar results. Conclusions-The Health ABC HF model adequately predicted 5-year heart failure risk in a large community-based study, providing support for the external validity of the model. This tool may be used to identify individuals to whom to target heart failure prevention efforts.
KW - Elderly
KW - Epidemiology
KW - Heart failure
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U2 - 10.1161/CIRCHEARTFAILURE.109.904300
DO - 10.1161/CIRCHEARTFAILURE.109.904300
M3 - Article
C2 - 20427700
AN - SCOPUS:77955493653
SN - 1941-3289
VL - 3
SP - 495
EP - 502
JO - Circulation: Heart Failure
JF - Circulation: Heart Failure
IS - 4
ER -