Table 3.

HRs and 95% CIs for long work hours and incident diabetes over a 12-year follow-up (n=7065), stratified by sex

	Model 1	Model 2	Model 3	Model 4
	HR (95% CI)	HR (95% CI)	HR (95% CI)	HR (95% CI)
Men
Usual weekly work hours
15–34	0.89 (0.42 to 1.87)	1.04 (0.48 to 2.24)	1.08 (0.51 to 2.30)	1.00 (0.48 to 2.10)
35–40	Ref	Ref	Ref	Ref
41–44	0.85 (0.47 to 1.53)	0.93 (0.49 to 1.75)	0.89 (0.47 to 1.67)	0.93 (0.51 to 1.70)
≥45	0.70 (0.52 to 0.95)	0.81 (0.59 to 1.11)	0.80 (0.59 to 1.10)	0.82 (0.59 to 1.14)
Women
Usual weekly work hours
15–34	1.06 (0.71 to 1.58)	1.10 (0.72 to 1.69)	1.11 (0.72 to 1.71)	1.11 (0.72 to 1.72)
35–40	Ref	Ref	Ref	Ref
41–44	1.19 (0.51 to 2.77)	1.13 (0.52 to 2.46)	1.14 (0.51 to 2.55)	1.05 (0.46 to 2.40)
≥45	1.56 (1.00 to 2.42)	1.63 (1.04 to 2.57)	1.58 (1.00 to 2.49)	1.51 (0.93 to 2.45)

Ontario respondents to the Canadian CommunityHealth Survey 2003. Statistically significant estimates are in bold.

Model 1: adjusted for age, weeks worked in the previous 12 months and occupational skill level.

Model 2: additional adjustment for immigrant status, ethnicity, marital status, presence of children, activity restrictions at work, hypertension, arthritis, mood and anxiety, other chronic conditions, shift work, primary occupational body position, and handling of loads.

Model 3: additional adjustment for smoking, leisure time physical activity, and alcohol consumption.

Model 4: additional adjustment for body mass index.

Ref, reference.