The effects of anger management and social contact on risk of myocardial infarction in type as and type bs

Abstract
The risk of myocardial infarction (MI) associated with Type A behaviour, anger management and social contact was examined using a retrospective case-control design. Binary multiple regression analyses were used to compare 206 male and 67 female MI cases with 454 male and 316 female controls. To examine the potential moderating role of sex and Type A behaviour, moderated and subgroup regressions were run. Type A behaviour was significantly more prevalent in cases than controls. MI risk was further increased in males who combined Type A behaviour and aggressive expression of anger. In females MI risk was associated with the combination of Type A behaviour and not expressing anger. In addition female cases were significantly less likely than controls to discuss their anger, and reported fewer available social contacts. Discussion of results includes consideration of the problems generated by the retrospective case-control design.