Peter Schnohr1, Jacob L Marott2, Tage S Kristensen2, Finn Gyntelberg2, Morten Grønbæk3, Peter Lange4, Magnus T Jensen2, Gorm B Jensen5, Eva Prescott6. 1. The Copenhagen City Heart Study, Frederiksberg Hospital, Nordre Fasanvej 57, Copenhagen DK-2000, Denmark peter@schnohr.dk. 2. The Copenhagen City Heart Study, Frederiksberg Hospital, Nordre Fasanvej 57, Copenhagen DK-2000, Denmark. 3. The Copenhagen City Heart Study, Frederiksberg Hospital, Nordre Fasanvej 57, Copenhagen DK-2000, Denmark National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark. 4. The Copenhagen City Heart Study, Frederiksberg Hospital, Nordre Fasanvej 57, Copenhagen DK-2000, Denmark Department of Respiratory Medicine, Hvidovre Hospital and Section of Social Medicine, Institute of Public Health, University of Copenhagen, Copenhagen, Denmark. 5. The Copenhagen City Heart Study, Frederiksberg Hospital, Nordre Fasanvej 57, Copenhagen DK-2000, Denmark Department of Cardiology, Hvidovre Hospital, Copenhagen, Denmark. 6. The Copenhagen City Heart Study, Frederiksberg Hospital, Nordre Fasanvej 57, Copenhagen DK-2000, Denmark Department of Cardiology, Bispebjerg University Hospital, Copenhagen, Denmark.
Abstract
AIMS: To rank psychosocial and traditional risk factors by importance for coronary heart disease. METHODS AND RESULTS: The Copenhagen City Heart Study is a prospective cardiovascular population study randomly selected in 1976. The third examination was carried out from 1991 to 1994, and 8882 men and women free of cardiovascular diseases were included in this study. Events were assessed until April 2013. Forward selection, population attributable fraction, and gradient boosting machine were used for determining ranks. The importance of vital exhaustion for risk prediction was investigated by C-statistics and net reclassification improvement. During the follow-up, 1731 non-fatal and fatal coronary events were registered. In men, the highest ranking risk factors for coronary heart disease were vital exhaustion [high vs. low; hazard ratio (HR) 2.36; 95% confidence interval (CI), 1.70-3.26; P < 0.001] and systolic blood pressure (≥160 mmHg or blood pressure medication vs. <120 mmHg; HR 2.07; 95% CI, 1.48-2.88; P < 0.001). In women, smoking was of highest importance (≥15 g tobacco/day vs. never smoker; HR 1.74; 95% CI, 1.43-2.11; P < 0.001), followed by vital exhaustion (high vs. low; HR 2.07; 95% CI, 1.61-2.68; P < 0.001). Vital exhaustion ranked first in women and fourth in men by population attributable fraction of 27.7% (95% CI, 18.6-36.7%; P < 0.001) and 21.1% (95% CI, 13.0-29.2%; P < 0.001), respectively. Finally, vital exhaustion significantly improved risk prediction. CONCLUSION: Vital exhaustion was one of the most important risk factors for coronary heart disease, our findings emphasize the importance of including psychosocial factors in risk prediction scores. Published on behalf of the European Society of Cardiology. All rights reserved.
AIMS: To rank psychosocial and traditional risk factors by importance for coronary heart disease. METHODS AND RESULTS: The Copenhagen City Heart Study is a prospective cardiovascular population study randomly selected in 1976. The third examination was carried out from 1991 to 1994, and 8882 men and women free of cardiovascular diseases were included in this study. Events were assessed until April 2013. Forward selection, population attributable fraction, and gradient boosting machine were used for determining ranks. The importance of vital exhaustion for risk prediction was investigated by C-statistics and net reclassification improvement. During the follow-up, 1731 non-fatal and fatal coronary events were registered. In men, the highest ranking risk factors for coronary heart disease were vital exhaustion [high vs. low; hazard ratio (HR) 2.36; 95% confidence interval (CI), 1.70-3.26; P < 0.001] and systolic blood pressure (≥160 mmHg or blood pressure medication vs. <120 mmHg; HR 2.07; 95% CI, 1.48-2.88; P < 0.001). In women, smoking was of highest importance (≥15 g tobacco/day vs. never smoker; HR 1.74; 95% CI, 1.43-2.11; P < 0.001), followed by vital exhaustion (high vs. low; HR 2.07; 95% CI, 1.61-2.68; P < 0.001). Vital exhaustion ranked first in women and fourth in men by population attributable fraction of 27.7% (95% CI, 18.6-36.7%; P < 0.001) and 21.1% (95% CI, 13.0-29.2%; P < 0.001), respectively. Finally, vital exhaustion significantly improved risk prediction. CONCLUSION: Vital exhaustion was one of the most important risk factors for coronary heart disease, our findings emphasize the importance of including psychosocial factors in risk prediction scores. Published on behalf of the European Society of Cardiology. All rights reserved.
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