Main activity |
Studying | 1.0 | 1.0 |
Working regularly or irregularly | 1.48 (1.23 to 1.79) | 0.88 (0.62 to 1.24) |
Other/data missing | 1.23 (0.96 to 1.57) | 0.82 (0.55 to 1.24) |
Duration of work exposure (RR per increment of 1 month) | 1.15 (1.03 to 1.29) | 1.12 (0.97 to 1.29) |