Model-based adjusted OR (95% CI) based on proportional odds regression for higher versus lower GCS
| Variable | OR (95% CI) | P value |
| Mechanism AUTO versus ATV | 4.17 (0.98 to 17.77) | 0.0410 |
| Mechanism MOTO versus ATV | 0.98 (0.14 to 6.73) | 0.0533 |
| Mechanism AUTO versus MOTO | 4.25 (1.05 to 17.21) | 0.9853 |
| Sex female versus male | 0.63 (0.41 to 0.98) | 0.0426 |
| Paediatric versus adults | 0.99 (0.51 to 1.92) | 0.9828 |
| Hispanic versus non-Hispanic | 1.41 (0.51 to 3.93) | 0.5066 |
| Drug use versus no drug use | 0.38 (0.24 to 0.62) | <0.0001 |
| Child seat/seat belt versus no protective equipment | 0.21 (0.14 to 0.33) | <0.0001 |
| Protective clothing/helmet versus no protective equipment | 1.19 (0.21 to 6.89) | 0.8471 |
Bold values denote statistical significance.
ATV, all-terrain vehicle; AUTO, automobile; GCS, Glasgow Coma Scale; MOTO, motorcycle.