| N Group number | | Hemorrhage () | | | No hemorrhage () | |
1 versus 2 | P 1a versus 1b |
2a versus 2b | All | Surgery | No Surgery | All | Surgery | No Surgery | 6,144 | 745 | 5,399 | 51,098 | 6,697 | 44,401 | 1 | 1a | 1b | 2 | 2a | 2b |
| Age | 50.7 (17.1) | 51.7 (16.6) | 50.6 (17.2) | 48.9 (17.3) | 41.6 (13.9) | 50.0 (17.5) | <0.001 | 0.094 | <0.001 | Female (%) | 49.4 | 47.9 | 49.6 | 52.8 | 53.8 | 52.7 | <0.001 | 0.404 | 0.092 | Race (%) | | | | | | | <0.001 | <0.001 | <0.001 | White | 64.6 | 58.8 | 65.3 | 68.2 | 64.9 | 68.6 | | | | Black | 13.5 | 14.7 | 13.4 | 11.6 | 8.4 | 12.1 | | | | Hispanic | 13.8 | 13.9 | 13.8 | 13.1 | 17.9 | 12.4 | | | | Asian | 4.1 | 6.4 | 3.8 | 3.5 | 4.4 | 3.4 | | | | Native Americ | 0.2 | 0 | 0.3 | 0.6 | 0.6 | 0.6 | | | | Other | 3.7 | 6.2 | 3.4 | 3.1 | 3.8 | 3 | | | | Admission (%) | | | | | | | <0.001 | 0.001 | 0.001 | Emergent | 66.7 | 60.5 | 67.5 | 43.1 | 10.3 | 47.1 | | | | Urgent | 24.4 | 28.4 | 23.8 | 15.9 | 10.9 | 16.5 | | | | Elective | 8.7 | 11.1 | 8.3 | 40.8 | 78.8 | 36.2 | | | | Emergent and Urgent | 91.1 | 88.9 | 99.6 | 59 | 21.2 | 63.6 | | | | Number of diagnoses | 6.7 (3.5) | 7.5 (3.3) | 6.6 (3.5) | 5.6 (3.6) | 4.2 (2.9) | 5.8 (3.7) | <0.001 | <0.001 | <0.001 | Number of procedures | 3 (2.9) | 5.5 (3.1) | 2.6 (2.7) | 1.8 (1.9) | 3.2 (2.3) | 1.6 (1.7) | <0.001 | <0.001 | <0.001 | Diagnosis, any (%) | | | | | | | | | | ICH | 65.4 | 71.1 | 64.6 | 0 | 0 | 0 | <0.001 | <0.001 | | SAH | 31.3 | 26.2 | 32 | 0 | 0 | 0 | <0.001 | 0.002 | | Other ICrH | 9.4 | 12.9 | 8.9 | 0 | 0 | 0 | <0.001 | 0.001 | | Acute Ischemia | 4.5 | 4 | 2.7 | 7.4 | 1.4 | 8.3 | <0.001 | 0.053 | <0.001 | Seizure | 19.4 | 17 | 19.7 | 33.7 | 33.4 | 33.7 | <0.001 | 0.078 | 0.681 | Headache | 4.6 | 1.5 | 5 | 10 | 5.7 | 10.6 | <0.001 | <0.001 | <0.001 | ICA aneurysm, unruptured | 3.1 | 2.7 | 3.1 | 2.6 | 2.4 | 2.7 | <0.001 | 0.517 | 0.252 | Angiogram | 50.9 | 50.7 | 50.9 | 34.7 | 45.9 | 33.2 | <0.001 | 0.937 | <0.001 | Embolization | 7 | 8.2 | 6.9 | 14.3 | 11.6 | 14.7 | <0.001 | 0.213 | <0.001 | Surgery | 12.1 | — | — | 12.1 | — | — | 0.099 | — | — | Radiosurgery | 0.1 | 0 | 0.1 | 2.2 | 0.3 | 2.5 | <0.001 | 0.405 | <0.001 | Aneurysm clipping | 4.2 | 2.9 | 4.4 | 1 | 1.7 | 0.9 | <0.001 | 0.065 | <0.001 | Ventilation, all durations | 23.2 | 36.1 | 21.4 | 2.7 | 4.9 | 2.5 | <0.001 | <0.001 | <0.001 | Ventilation >95 h | 11 | 22.6 | 9.3 | 0.9 | 2.4 | 0.7 | <0.001 | <0.001 | <0.001 | Length of stay (d) | 10.4 (12.9) | 16.4 (11.5) | 9.6 (12.9) | 4.6 (5.8) | 6.8 (6.4) | 4.3 (5.7) | <0.001 | <0.001 | <0.001 | Outcome (%) | | | | | | | <0.001 | <0.001 | <0.001 | Routine discharge | 44.4 | 31.5 | 46.2 | 79.3 | 79.7 | 79.3 | | | | Short-term hospital | 12.4 | 3.9 | 13.6 | 3.1 | 0.6 | 3.4 | | | | Other type facility | 27.6 | 45.6 | 25.1 | 10.2 | 13.7 | 9.8 | | | | Home health care | 5.4 | 7.1 | 5.2 | 5.7 | 4.7 | 5.8 | | | | Death | 9.2 | 11.8 | 8.9 | 0.9 | 1.1 | 0.9 | | | | Unfavorable outcome | 42.2 | 64.5 | 39.2 | 16.8 | 19.5 | 16.5 | | | | Charges mean ($) | 71,151 (90,787) | 14,0034 (123,099) | 61,256 (80,452) | 35,792 (46,033) | 77,846 (68,618) | 30,090 (38,675) | | <0.001 | <0.001 | Charges sum ($) | 414.8 Mill | 102.6 Mill | 312.3 Mill | 1,717.4 Mill | 539 Mill | 1,380 Mill | | | | Hospital Characteristics | | | | | | | | | | Bed Size | | | | | | | 0.01 | <0.001 | 0.006 | Small | 39.4 | 40.3 | 39.3 | 40.1 | 40.4 | 40.1 | | | | Medium | 26.2 | 32.4 | 25.4 | 28 | 26.1 | 28.2 | | | | Large | 34.3 | 27.4 | 35.3 | 31.9 | 33.6 | 31.7 | | | | Location/Teaching | | | | | | | 0.265 | <0.001 | 0.001 | Rural | 43.6 | 51.8 | 42.5 | 42.4 | 43.4 | 42.2 | | | | Urban Non-Teaching | 40.1 | 29.1 | 41.7 | 40.9 | 41.8 | 40.7 | | | | Urban Teaching | 16.3 | 19.1 | 15.9 | 16.7 | 14.8 | 17 | | | | Hospital Region | | | | | | | 0.088 | <0.001 | <0.001 | NE | 18.2 | 18.5 | 18.2 | 19.4 | 14.7 | 20.1 | | | | NW/NC | 22 | 21.3 | 22.1 | 22.4 | 16 | 23.3 | | | | S | 33.9 | 27.6 | 34.8 | 33.9 | 33.1 | 34 | | | | W | 25.8 | 32.7 | 24.9 | 24.3 | 36.2 | 22.7 | | | |
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