Long Working Hours and Risk of Recurrent Coronary Events
D Evidence from prospective studies has suggested that long working hours are associated with incident coronary heart disease (CHD) events. However, no previous study has examined whether long working hours are associated with an increased risk of recurrent CHD events among patients returning to work after a first myocardial infarction (MI).
The purpose of this study was to examine the effect of long working hours on the risk of recurrent CHD events. This is a prospective cohort study of 967 men and women age 35 to 59 years who returned to work after a first MI. Patients were recruited from 30 hospitals across the province of Quebec, Canada. The mean
Recurrent CHD events occurred among 205 patients. Participants working long hours ($ 55 h/week) had a higher risk of recurrent CHD events after controlling for sociodemographics,
CONCLUSIONS Among patients returning to work after a first MI, longer working hours per week is associated with an increased risk of recurrent CHD events. Secondary prevention interventions aiming to reduce the number of working hours among these patients may lower the risk of CHD recurrence.
(J Am Coll Cardiol 2021;77:1616−25) © 2021 by the American College of Cardiology Foundation.
Authors: Xavier Trudel, PHD, Chantal Brisson, PHD, Denis Talbot, PHD, Mahée