Mutually adjusted relative risk (RR) of work injury among 15 365 paid employees
| RR (95% CI) | ||
|---|---|---|
| ESS, Epworth Sleepiness Score. | ||
| Sex | Male v female | 1.29 (1.09–1.53) |
| Education | Primary/high/secondary | 1 |
| Polytechnic or similar | 1.07 (0.90–1.27) | |
| University | 0.78 (0.63–0.97) | |
| Usual work pattern | Daytime, no shifts | 1 |
| Irregular/other | 1.17 (0.95–1.43) | |
| Rotating, no nights | 1.75 (1.17–2.61) | |
| Permanent nights | 1.38 (0.95–2.00) | |
| Rotating, with nights | 1.89 (1.49–2.41) | |
| Hours worked | More than 40 h v 40 h or less | 1.32 (1.12–1.55) |
| Smoking | Current smoker v not | 1.46 (1.21–1.75) |
| Daytime sleepiness | ESS >10 v ⩽10 | 1.34 (1.07–1.67) |
| Sleep difficulties | None | 1 |
| 1–4 monthly | 1.26 (0.99–1.60) | |
| 5 or more monthly | 1.67 (1.28–2.18) | |
| Headaches decrease activities | Yes v no | 1.60 (1.34–1.90) |
| BMI | 15–24 | 1 |
| 25–29 | 1.28 (1.07–1.52) | |
| 30+ | 1.49 (1.22–1.82) | |
| Occupation (Appendix 2) | Legislator/administrator/manager | 1 |
| Professional | 1.29 (0.93–1.80) | |
| Associate professional/technician | 1.29 (0.93–1.80) | |
| Clerk | 1.22 (0.85–1.75) | |
| Service/sales | 2.28 (1.63–3.18) | |
| Agriculture/trades/machine/elementary | 4.04 (2.98–5.47) | |