Multivariate logistic regression for factors associated with need for surgical procedures (pseudo R2=0.291)
| OR | P value | 95% CI | ||
| Age | 0.97 | 0.489 | 0.91 | 1.05 |
| Extremity fracture | 9.53 | 0.012 | 1.65 | 55.07 |
| Facial fractures | 1.61 | 0.674 | 0.18 | 14.74 |
| ICH | 0.36 | 0.433 | 0.03 | 4.70 |
| Helmet | 11.05 | 0.165 | 0.37 | 329 |
| ETOH | 0.65 | 0.664 | 0.10 | 4.46 |
| THC | 8.76 | 0.043 | 1.07 | 71.45 |
| Amphetamine/methamphetamine | 0.74 | 0.76 | 0.10 | 5.45 |
ETOH, alcohol use with blood alcohol level >80 mg/dL; ICH, intracranial hemorrhage; THC, tetrahydrocannabinol.