Multivariable analysis for predictors of ICP monitor placement (NTDB 2010–2014)
| OR (95% CI) | Adjusted OR (95% CI) | |
| Age (years) | ||
| <65 | – | – |
| ≥65 | 0.39 (0.35 to 0.42) | 0.41 (0.36 to 0.46) |
| Male sex | 1.29 (1.20 to 1.40) | 1.10 (1.02 to 1.19) |
| Insurance status | ||
| Medicaid | – | – |
| Private/commercial | 1.03 (0.92 to 1.16) | 1.14 (1.01 to 1.28) |
| Self-pay | 0.85 (0.75 to 0.96) | 0.89 (0.79 to 1.01) |
| Blue Cross Blue Shield | 0.97 (0.83 to 1.14) | 1.02 (0.86 to 1.20) |
| Medicare | 0.42 (0.37 to 0.47) | 0.72 (0.62 to 0.83) |
| Hospital status | ||
| University | – | – |
| Community | 0.98 (0.92 to 1.06) | 1.00 (0.93 to 1.08) |
| Non-teaching | 0.86 (0.77 to 0.96) | 0.95 (0.84 to 1.06) |
| Neurosurgeons, n | ||
| <3 | – | – |
| ≥3 | 1.29 (1.13 to 1.46) | 1.23 (1.08 to 1.41) |
ICP, intracranial pressure; NTDB, National Trauma Data Bank.