Basic information on road traffic crashes for migrant workers and the control group in Guangzhou from 2017 to 2021
| Variable | Control group (N=8559) | Migrant worker (N=25 223) | Total (N=33 782) |
| Outcome | |||
| No injuries | 4474 (13.24%) | 11 950 (35.37%) | 16 424 (48.62%) |
| Injuries | 4085 (12.09%) | 13 273 (39.29%) | 17 358 (51.38%) |
| Human damage | 47.73% | 52.62% | 51.38% |
| Gender | |||
| Male | 6825 (20.20%) | 20 807 (61.59%) | 27 632 (81.80%) |
| Female | 1734 (5.13%) | 4416 (13.07%) | 6150 (18.20%) |
| Age (M±SE) | 38.48±17.73 | 40.08±14.25 | / |
| Age group | |||
| 0–19 | 1032 (3.05%) | 897 (2.66%) | 1929 (5.71%) |
| 20–39 | 3635 (10.76%) | 12 488 (36.97%) | 16 123 (47.73%) |
| 40–59 | 2755 (8.16%) | 9441 (27.95%) | 12 196 (36.10%) |
| ≥60 | 951 (2.82%) | 2397 (7.10%) | 3348 (9.91%） |
| Unknown | 186 (0.55%) | 0 (0.00%) | 186 (0.55%) |
| Region | |||
| Central urban | 2298 (6.80%) | 3136 (9.28%) | 5434 (16.09%) |
| Outer urban | 5651 (16.73%) | 20 713 (61.31%) | 26 364 (78.04%) |
| Highway | 610 (1.81%) | 1374 (4.07%) | 1984 (5.87%) |
| Road user | |||
| Pedestrian | 1025 (3.03%) | 2062 (6.10%) | 3087 (9.14%) |
| Pedal cyclist | 426 (1.26%) | 1002 (2.97%) | 1428 (4.23%) |
| Electric cyclist | 762 (2.26%) | 2215 (6.56%) | 2977 (8.81%) |
| Motorcyclist | 1659 (4.91%) | 7747 (22.93%) | 9406 (27.84%) |
| Four-wheeled vehicle occupant | 4424 (13.10%) | 11 950 (35.37%) | 16 374 (48.47%) |
| Others or unknown | 263 (0.78%) | 247 (0.73%) | 510 (1.51%) |
| Time | |||
| Day | 4076 (12.07%) | 11 410 (33.78%) | 15 486 (45.84%) |
| Nightfall or dawn | 192 (0.57%) | 689 (2.04%) | 881 (2.61%) |
| Night-time | 4291 (12.70%) | 13 124 (38.85%) | 17 415 (51.55%) |
M, mean; N, number; SE, standard error.