Variables | HR (95% CI) by lifetime duration of night shift work | P for trend | ||
---|---|---|---|---|
None |  < 10 years |  ≥ 10 years | ||
Case/all subjects | 805/56,698 | 176/9673 | 164/8188 | Â |
Model 1 | 1 [reference] | 1.28 (1.09, 1.51) | 1.42 (1.20, 1.67) |  < 0.001 |
Model 2 | 1 [reference] | 1.33 (1.13, 1.57) | 1.48 (1.25, 1.75) |  < 0.001 |
Model 3 | 1 [reference] | 1.18 (1.00, 1.39) | 1.22 (1.03, 1.45) | 0.007 |
Model 4 | 1 [reference] | 1.17 (1.00, 1.38) | 1.23 (1.03, 1.46) | 0.007 |