Table 1.

Associations between average weekly working hours, CMD and suicidal ideation in JDs with unadjusted and adjusted estimates for effect size (95% CI) (n=2706)

	CMD (n=2706)		Suicidal ideation (n=2706)
	OR (95% CI)	p	OR (95% CI)	p
Unadjusted model
Hours worked per week (continuous)	1.02 (1.01 to 1.02)	<0.001	1.02 (1.01 to 1.03)	<0.001
Hours worked per week
35–39 hours	0.95 (0.69 to 1.30)	0.732	1.02 (.62 to 1.69)	0.922
40–44 hours	Reference group		Reference group
45–49 hours	1.37 (1.06 to 1.77)	0.014	1.51 (1.02 to 2.21)	0.035
50–54 hours	2.05 (1.62 to 2.59)	<0.001	1.77 (1.23 to 2.52)	0.002
55+ hours	2.05 (1.63 to 2.57)	<0.001	2.19 (1.57 to 3.05)	<0.001
Adjusted model*
Hours worked per week (continuous)	1.02 (1.01 to 1.02)	<0.001	1.02 (1.00 to 1.02)	<0.001
Hours worked per week
35–39 hours	0.997 (0.72 to 1.38)	0.984	1.24 (0.74 to 2.07)	0.419
40–44 hours	Reference group		Reference group
45–49 hours	1.32 (1.02 to 1.70)	0.037	1.40 (0.95 to 2.06)	0.091
50–54 hours	2.04 (1.60 to 2.59)	<0.001	1.58 (1.10 to 2.27)	0.014
55+ hours	2.05 (1.62 to 2.59)	<0.001	2.00 (1.42 to 2.81)	<0.001

*NB: analyses adjusted for age (continuous), gender, stage of training, location, area of specialty, marital status and whether medical degree was completed overseas. Reference group was 40–44 hours.

CMD, likely case of common mental disorder, assessed by the GHQ-28;SI, Positive response indicating suicidal ideation in the last year, assessed by a single item.