Association between working hours at baseline and a major depressive episode at follow-up, the Whitehall II study, 1991-9.

*Unadjusted.†Adjusted for age and sex.‡As previous model but additionally adjusted for occupational grade and marital status.§As previous model but additionally adjusted for chronic physical disease, smoking, and alcohol use.¶As previous model but additionally adjusted for job strain and social support at work.CI = Confidence interval.