Cohort Enhancing the Framingham Risk Score for coronary heart disease by addinginformation on working hours

The Framingham Risk Score is a widely used prediction model for the assessment of risk for coronary heart dis-ease (CHD), which contains traditional risk factors (age, sex, blood pressure, cholesterol, diabetes and smoking status).1 However, other more non-traditional (psycho-social) factors have also emerged as risks for CHD. The purpose of the study by Kivimäki et al was to determine whether the addition of working hours to the Framingham Score improves the risk prediction of this model. Methods The authors used a prospective cohort of British civil servants enrolled in the Whitehall II study, which exam-ines health behaviour, work environment and socioeco-nomic status as they pertain to clinical disease.2 Baseline data were collected during phase III of the parent stud