From: The physical and mental health of Australian truck drivers: a national cross-sectional study
 | Whole cohort N = 1390 | Long-haul N = 549 (39.5%) | Short-haul N = 837 (60.2%) |  |  | |||
---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | Χ2 (df) | p | |
Age | ||||||||
  < 35 years | 367 | 26.4% | 141 | 25.7% | 225 | 26.9% | 4.3 (3) | 0.231 |
 35–44 years | 273 | 19.6% | 95 | 17.3% | 177 | 21.2% |  |  |
 45–55 years | 364 | 26.2% | 153 | 27.9% | 210 | 25.1% |  |  |
  > 55 years | 383 | 27.6% | 159 | 29.0% | 223 | 26.7% |  |  |
Sex | ||||||||
 Male | 1349 | 97.1% | 531 | 97.4% | 814 | 97.7% | 0.1 (1) | 0.231 |
 Female | 33 | 2.4% | 14 | 2.6% | 19 | 2.3% |  |  |
Employment type | ||||||||
 Owner driver | 190 | 13.7% | 82 | 15.1% | 107 | 12.9% | 1.4 (1) | 0.242 |
 Employee driver | 1181 | 85.5% | 461 | 84.9% | 724 | 87.2% |  |  |
Experience | ||||||||
  < 5 years | 283 | 20.4% | 91 | 16.6% | 191 | 22.8% | 11.9 (2) | 0.003 |
 5–20 years | 533 | 38.3% | 204 | 37.2% | 328 | 39.2% |  |  |
  > 20 years | 573 | 41.2% | 253 | 46.2% | 318 | 38.0% |  |  |
Payment type | ||||||||
 Flat rate | 459 | 33.0% | 123 | 22.7% | 335 | 40.4% | 520.9 (4) | < 0.001 |
 Single time pay | 417 | 30.0% | 48 | 8.8% | 368 | 44.3% |  |  |
 Kilometre rate | 285 | 20.5% | 263 | 48.4% | 22 | 2.7% |  |  |
 Per trip/delivery | 129 | 9.3% | 77 | 14.2% | 52 | 6.3% |  |  |
 Other | 86 | 6.2% | 32 | 5.9% | 53 | 6.4% |  |  |
Working hours/week | ||||||||
  ≤ 40 | 156 | 11.2% | 38 | 7.0% | 117 | 14.1% | 169.5 (2) | < 0.001 |
 41–60 | 700 | 50.4% | 185 | 34.1% | 513 | 61.8% |  |  |
  > 60 | 521 | 37.5% | 320 | 58.9% | 200 | 24.1% |  |  |
 Mean (SD) | 60.62 (17.77) | 69.34 (18.83) | 55.59 (15.06) |  |  | |||
Shift type | ||||||||
 Multiple trips between same location | 789 | 56.8% | 140 | 25.7% | 647 | 78.0% | 423.4 (2) | < 0.001 |
 Single trip between 2 locations | 334 | 24.0% | 274 | 50.3% | 60 | 7.2% |  |  |
 Multiple trips between 2 locations | 255 | 18.3% | 131 | 24.0% | 122 | 14.7% |  |  |
Vehicle type | ||||||||
 B double | 451 | 32.4% | 279 | 51.0% | 171 | 20.5% | 289.8 (3) | < 0.001 |
 Articulated truck | 432 | 31.1% | 126 | 23.0% | 305 | 36.5% |  |  |
 Rigid truck and other | 349 | 25.1% | 37 | 6.8% | 311 | 37.2% |  |  |
 Road train | 153 | 11.0% | 105 | 19.2% | 48 | 5.7% |  |  |
Working for more than one company | ||||||||
 Yes | 183 | 13.2% | 89 | 16.3% | 93 | 11.2% | 7.5 (1) | 0.006 |
 No | 1197 | 86.1% | 457 | 83.7% | 737 | 88.8% |  |  |