Socioeconomic status and ischaemic heart disease mortality in middle-aged men: importance of the duration of follow-up. The Copenhagen Male Study.

The predictive value of some risk factors may diminish with increasing duration of follow-up. This study was performed to elucidate the role of socioeconomic status as a risk factor for ischaemic heart disease (IHD) mortality in middle-aged men, testing the hypothesis that the role of mediators of the association of socioeconomic status with risk of IHD would diminish with increasing length of follow-up.