Are social inequalities as associated with the risk of ischaemic heart disease a result of psychosocial working conditions?
Large social inequalities exist in the risk of ischaemic heart disease (IHD), and they are only partly explained by established cardiovascular disease risk factors. Social class differences in psychosocial working conditions could be important explanatory factors. In a cohort of 1752 employed males, age in years, mean (S.D.): 59.7 (3.5), we investigated the issue. Self-reported psychosocial working conditions examined were: influence on the job, work monotony, work pace, degree of satisfaction with immediate superiors and colleagues, and ability to relax after working hours. One hundred and fourteen men were excluded due to prevalent cardiovascular disease. During the follow-up period (1985/86-1989), 46 men (approx. 3%) suffered an IHD event, 11 events were fatal. Compared with the rest, the highest social class had a relative risk with 95% CI (RR) of IHD of 0.26 (0.06-1.09), an association which was not explained by major potentially confounding or effect modifying factors: smoking, a
