TY - JOUR
T1 - Effect of Correcting for Long-Term Variation in Major Coronary Heart Disease Risk Factors
T2 - Relative Hazard Estimation and Risk Prediction in the Atherosclerosis Risk in Communities Study
AU - Paynter, Nina P.
AU - Crainiceanu, Ciprian M.
AU - Sharrett, A. Richey
AU - Chambless, Lloyd E.
AU - Coresh, Josef
N1 - Funding Information:
The Atherosclerosis Risk in Communities Study was supported by the National Heart Lung and Blood Institute [contract numbers N01-HC-55015, N01-HC-55016, N01-HC-55018, N01-HC-55019, N01-HC-55020, N01-HC-55021, and N01-HC-55022 ]. Dr. Paynter was supported by the National Heart Lung and Blood Institute [training grant number T32HL07024 ]. The authors also thank the staff and participants of the ARIC Study for their important contributions.
PY - 2012/3
Y1 - 2012/3
N2 - Purpose: To examine the effect of correcting coronary heart disease (CHD) risk factors for long-term within-person variation on CHD risk. Methods: By using 5533 men and 7301 women from the Atherosclerosis Risk in Communities (ARIC) study, we compared models incorporating risk factors measured at a single visit and models incorporating additional measurements for systolic blood pressure, total cholesterol, and high-density lipoprotein cholesterol taken 3 years before baseline. Results: The largest change away from null was observed for systolic blood pressure, ie, hazard ratio (HR) 1.38 to 1.69 (+81%) in women and HR 1.26 to 1.41 (+56%) in men. HRs also decreased for age (-32% in women, -9% in men), race (-67% in women), the presence of diabetes (-13% in men and women), and medication use for hypertension (-27% in women, -26% in men) and cholesterol (-97% in women, HR 1.06-0.93 in men). The area under the ROC curve did not improve significantly in men or women, whereas reclassification was only significant in women (net reclassification improvement 5.4%, p = 0.016). Conclusions: Modeling long-term variation in CHD risk factors had a substantial impact on HR estimates, with new effect estimates further from the null for some risk factors and closer for others including age and medication use, but only improved risk classification in women.
AB - Purpose: To examine the effect of correcting coronary heart disease (CHD) risk factors for long-term within-person variation on CHD risk. Methods: By using 5533 men and 7301 women from the Atherosclerosis Risk in Communities (ARIC) study, we compared models incorporating risk factors measured at a single visit and models incorporating additional measurements for systolic blood pressure, total cholesterol, and high-density lipoprotein cholesterol taken 3 years before baseline. Results: The largest change away from null was observed for systolic blood pressure, ie, hazard ratio (HR) 1.38 to 1.69 (+81%) in women and HR 1.26 to 1.41 (+56%) in men. HRs also decreased for age (-32% in women, -9% in men), race (-67% in women), the presence of diabetes (-13% in men and women), and medication use for hypertension (-27% in women, -26% in men) and cholesterol (-97% in women, HR 1.06-0.93 in men). The area under the ROC curve did not improve significantly in men or women, whereas reclassification was only significant in women (net reclassification improvement 5.4%, p = 0.016). Conclusions: Modeling long-term variation in CHD risk factors had a substantial impact on HR estimates, with new effect estimates further from the null for some risk factors and closer for others including age and medication use, but only improved risk classification in women.
KW - Cardiovascular Models
KW - Epidemiology
KW - Heart Diseases
KW - Risk Assessment
KW - Risk Factors
KW - Statistics
UR - http://www.scopus.com/inward/record.url?scp=84857445295&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84857445295&partnerID=8YFLogxK
U2 - 10.1016/j.annepidem.2011.12.001
DO - 10.1016/j.annepidem.2011.12.001
M3 - Article
C2 - 22221585
AN - SCOPUS:84857445295
SN - 1047-2797
VL - 22
SP - 191
EP - 197
JO - Annals of epidemiology
JF - Annals of epidemiology
IS - 3
ER -