Unadjusted relative risk (RR) of work injury associated with sleep disorders, fatigue, headaches, and work injury among 15,687 paid employees*
| Work injury, n (%) | Total, n | RR (95% CI) | ||
|---|---|---|---|---|
| *n = 322 people in any paid employment did not respond to the work injury question. | ||||
| ESS, Epworth Sleepiness Score. | ||||
| Sleep disorder | Nil | 719 (7.5) | 9582 | 1 |
| Snoring loudly | 477 (10.1) | 4706 | 1.39 (1.23–1.57) | |
| Apnoea/choke | 121 (12.2) | 989 | 1.72 (1.40–2.11) | |
| Sleep sufficiency | Plenty | 67 (8.2) | 815 | 1 |
| Right amount | 369 (7.0) | 5249 | 0.84 (0.64–1.11) | |
| Want a bit more | 654 (9.0) | 7262 | 1.10 (0.85–1.44) | |
| Want a lot more | 153 (10.1) | 1512 | 1.26 (0.93–1.70) | |
| Not enough | 74 (16.5) | 449 | 2.20 (1.55–3.14) | |
| Daytime sleepiness | ESS <10 | 1105 (8.1) | 13590 | 1 |
| ESS ⩾10 | 172 (12.9) | 1334 | 1.67 (1.41–2.00) | |
| Sleep difficulties (nights per month) | None | 139 (7.2) | 1936 | 1 |
| 1–4 | 808 (8.0) | 10144 | 1.12 (0.93–1.35) | |
| 5+ | 338 (11.8) | 2873 | 1.72 (1.40–2.12) | |
| Fatigue (times per month) | None | 242 (6.9) | 3530 | 1 |
| 1 | 176 (7.5) | 2346 | 1.10 (0.90–1.35) | |
| 2–4 | 415 (8.2) | 5053 | 1.21 (1.03–1.43) | |
| 5–15 | 349 (10.9) | 3207 | 1.66 (1.40–1.97) | |
| 16–20 | 119 (12.1) | 981 | 1.88 (1.49–2.37) | |
| Headaches decreasing activities | No | 972 (8.2) | 11862 | 1 |
| Yes | 304 (10.3) | 2962 | 1.28 (1.12–1.47) | |