Development of delirium from arrival through 48 hours postoperative
| Covariate | OR (95% CI) | P value |
| FICB versus no FICB | 1.23 (0.50 to 3.02) | 0.65 |
| General versus regional anesthesia | 0.71 (0.26 to 1.92) | 0.50 |
| Pre-injury anticoagulant versus not | 0.82 (0.31 to 2.17) | 0.69 |
| Smoker versus non-smoker | 2.22 (0.88 to 5.62) | 0.09 |
| ASA score ≥III versus I/II | 3.64 (1.19 to 11.09) | 0.02 |
| Head/Neck fracture versus other | 1.12 (0.52 to 2.41) | 0.78 |
| Surgery >24 hours versus ≤24 hours | 2.03 (0.92 to 4.51) | 0.08 |
Adjusted for variables with p<0.10 in univariate analysis. C-statistic: 0.69. Bold values denote statistical significance.
ASA, American Society of Anesthesiologist; FICB, fascia iliaca compartment block.