Table 3.

 Adjusted hazard ratios (95% confidence intervals) for cardiovascular mortality by levels of work characteristics

Characteristic	Covariates in addition to age and sex
	Occupational group	Behavioural risk factors*	Biological risk factors†	All aforementioned
Job strain:
Low	1.00	1.00	1.00	1.00
Intermediate	1.36 (0.72 to 2.57)	1.71 (0.92 to 3.17)	1.58 (0.84 to 2.95)	1.64 (0.85 to 3.19)
High	1.89 (0.93 to 3.81)	2.20 (1.12 to 4.32)	2.35 (1.22 to 4.52)	2.22 (1.04 to 4.73)
Job control (a component of job strain):
High	1.00	1.00	1.00	1.00
Intermediate	0.94 (0.48 to 1.82)	1.06 (0.57 to 1.98)	1.14 (0.62 to 2.11)	0.74 (0.39 to 1.50)
Low	1.55 (0.80 to 3.01)	1.79 (0.98 to 3.27)	1.89 (1.06 to 3.38)	1.42 (0.72 to 2.82)
Effort-reward imbalance:
Low	1.00	1.00	1.00	1.00
Intermediate	2.16 (1.04 to 4.49)	2.00 (1.06 to 3.78)	2.07 (1.09 to 3.91)	1.91 (0.90 to 4.05)
High	2.36 (1.06 to 5.46)	2.18 (1.15 to 4.13)	2.29 (1.21 to 4.35)	2.42 (1.02 to 5.73)

^*Smoking and physical activity. 

^†Systolic blood pressure, cholesterol concentration, and body mass index.