Person years | Cases | Crude* model | Fully adjusted† model | Fully adjusted† model+BMI | |
---|---|---|---|---|---|
Work shift | Years | N | HR (95% CI) | HR (95% CI) | HR (95% CI) |
Day shifts | 193 624 | 509 | 1.00 | 1.00 | 1.00 |
Evening shifts | 31 619 | 104 | 1.24 (1.01 to 1.53) | 1.21 (0.98 to 1.50) | 1.29 (1.04 to 1.59) |
Night shifts | 17 118 | 84 | 1.84 (1.46 to 2.31) | 1.73 (1.37 to 2.19) | 1.58 (1.25 to 1.99) |
Rotating shifts | 65 716 | 176 | 1.04 (0.87 to 1.23) | 1.06 (0.89 to 1.26) | 1.08 (0.91 to 1.28) |
*Adjusted for age.
†Adjusted for age, smoking status, smoking intensity, physical activity, alcohol consumption (g/week), intake of fatty meat, marital status, employment status, acute myocardial infarction, hypertension, fruit and vegetables intake.
BMI, body mass index.