Insurance status and hospital data (NTDB 2010–2014)
| ICP monitoring n (%) | No ICP monitoring n (%) | P value | |
| Insurance status | <0.001 | ||
| Private/commercial | 945 (23.1) | 4615 (17.3) | |
| Self-pay | 625 (15.3) | 3721 (14.0) | |
| Blue Cross Blue Shield | 258 (6.3) | 1342 (5.0) | |
| Medicare | 664 (16.2) | 7962 (29.9) | |
| Medicaid | 594 (14.5) | 2996 (11.3) | |
| Other/unknown | 384 (9.4) | 2732 (10.3) | |
| Hospital status | 0.034 | ||
| Community | 1467 (35.8) | 9488 (35.6) | |
| Non-teaching | 405 (9.9) | 2993 (11.2) | |
| University | 2221 (54.3) | 14 136 (53.1) | |
| Neurosurgeons, n | <0.001 | ||
| 0 | 0 (0.0) | 56 (0.2) | |
| 1–2 | 285 (7.0) | 2280 (8.6) | |
| 3–5 | 2008 (49.1) | 12 595 (47.3) | |
| >5 | 1800 (44.0) | 11 686 (43.9) |
ICP, intracranial pressure; NTDB, National Trauma Data Bank.