| Variables | Somnolents (%) | Nonsomnolents (%) | p | OR | pa | ORa |
| Gender | ||||||
| Woman | 65.2 | 44.2 | 0.07 | 1 | 0.007 | 1 |
| Man | 34.8 | 55.8 | 0.4 [0.2 - 1.1] | 0.2 [0.1 - 0.7] | ||
| Age | ||||||
| 20 - 30 | 0 | 11.7 | 1 | 1 | ||
| 31 - 40 | 30.4 | 41.6 | 0.01 | 1.1 [0.4 - 3.2] | 0.007 | 0.9 [0 - 1.7] |
| 41 - 50 | 43.5 | 35.1 | 3.5 [1.2 - 9.7] | 1.1 [1.1 - 4.9] | ||
| 51 - 60 | 26.1 | 11.7 | 6 [0.34 - 12.4] | 2.3 [1.1 - 8.2] | ||
| BMI | ||||||
| <25 | 17.4 | 45.5 | 0.01 | 1 | ||
| ≥25 | 82.6 | 54.5 | 3.96 [1.2 - 12.7] | |||
| Home-work journey | ||||||
| <10 Km | 47.8 | 68.8 | 1 | 1 | ||
| >10 Km | 52.2 | 31.2 | 0.06 | 2.4 [0.9 - 6.2] | 0,01 | 3.6 [1.2 - 11.2] |
| Work accident | ||||||
| Yes | 43.5 | 64.9 | 1 | |||
| No | 56.5 | 35.1 | 0.05 | 2.41 [0.9 - 6.2] |