Table 3.
Univariate analysis of consequences of sleepiness from NSW on safety and driving
| Safety outcome | ESS ≤ 10 | ESS ≥ 11 | χ 2 | P value |
|---|---|---|---|---|
| No. (%) | No. (%) | |||
| Nodding at the wheel | 4.85 | 0.028 | ||
| No | 73 (56) | 18 (38) | ||
| Yes | 57 (44) | 30 (63) | ||
| Missing: 0 | ||||
| Sleepiness after night shift | 9.90 | 0.002 | ||
| Low | 64 (49) | 11 (23) | ||
| High | 66 (51) | 37 (77) | ||
| Missing: 0 | ||||
| Confidence in complex tasks | 4.93 | 0.026 | ||
| Confident with tasks | 144 (88) | 47 (76) | ||
| Finds tasks difficult | 20 (12) | 15 (24) | ||
| Missing: 3 | ||||
| Near-miss car accidents | 11.42 | 0.001 | ||
| No | 82 (63) | 18 (38) | ||
| Yes | 48 (37) | 30 (63) | ||
| Missing: 0 | ||||
| Needle stick injuries | 1.39 | 0.239 | ||
| No | 149 (90) | 53 (84) | ||
| Yes | 17 (10) | 10 (16) | ||
| Missing: 0 |