OBJECTIVE: Social position has yet to be established as a risk factor of coronary heart disease (CHD). Our aim was to investigate an individual life-course social position gradient link with CHD incidence in the EPIC-Spain cohort. METHODS: 41,066 participants, mostly 30-65 years old, and free of cardiovascular disease at baseline (1992-1996) were followed up for a mean of 10.4 years. A combined score of paternal occupation in childhood and own adult education was used to assess individual life-course risk accumulation. Hazard ratios of CHD were estimated using Cox models, stratifying by centre, and age, and adjusting for cardiovascular risk factors. RESULTS: 583 participants (80 % men) developed a definite CHD event. Paternal occupational class IV was associated with CHD in all models in men. The educational gradient remained significant after adjusting for diet and physical activity (p = 0.01). All adjusted risk of incident CHD rose by 23 % (95 % CI 6-42 %) per category increase of life-course social position score in men. No significant associations were found in women. CONCLUSIONS: Individual life-course social position gradient was adversely related to incident CHD in Spanish men.
OBJECTIVE: Social position has yet to be established as a risk factor of coronary heart disease (CHD). Our aim was to investigate an individual life-course social position gradient link with CHD incidence in the EPIC-Spain cohort. METHODS: 41,066 participants, mostly 30-65 years old, and free of cardiovascular disease at baseline (1992-1996) were followed up for a mean of 10.4 years. A combined score of paternal occupation in childhood and own adult education was used to assess individual life-course risk accumulation. Hazard ratios of CHD were estimated using Cox models, stratifying by centre, and age, and adjusting for cardiovascular risk factors. RESULTS: 583 participants (80 % men) developed a definite CHD event. Paternal occupational class IV was associated with CHD in all models in men. The educational gradient remained significant after adjusting for diet and physical activity (p = 0.01). All adjusted risk of incident CHD rose by 23 % (95 % CI 6-42 %) per category increase of life-course social position score in men. No significant associations were found in women. CONCLUSIONS: Individual life-course social position gradient was adversely related to incident CHD in Spanish men.
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