Extracted data from the literature which were used to estimate the prevalence of ICH in MHI
| First author (reference) | Publication year | Design | ED/AD | n | Severity (GCS) | N CTs | LOC/PTA (%) | Previous ICH (%) | Surgical interventions (%) | Deaths(%) |
| Livingston23 | 1991 | R | ED | 111 | 14–15 | 111 | 82 | 13.5 | 0 | |
| Livingston25 | 1991 | R | ED | 138 | 14–15 | 75 | 75 | 9.4 | 0.7 | |
| Mohanty14 | 1991 | R | AD | 348 | 13–15 | 348 | 100 | 3.4 | 0 | 0 |
| Rao24 | 1991 | R | 857 | 15 | 857 | 11.7 | 4.3 | |||
| Harad5 | 1992 | R | ED | 302 | 13–15 | 302 | 61 | 18.2 | ||
| Shackford19 | 1992 | R | ED | 2766 | 13–15 | 2166 | 100 | 16.9 | 4 | 0.2 |
| Stein20 | 1992 | R | ED | 1538 | 13–15 | 1538 | 100 | 12.9 | 3.8 | |
| Jeret18 | 1993 | P | ED | 712 | 15 | 712 | 100 | 9.4 | 0.3 | 0.1 |
| Borczuk22 | 1995 | R | ED | 1448 | 13–15 | 1448 | 80 | 6.3 | 0.8 | 0 |
| Dunham21 | 1996 | R | ED | 2032 | 13–15 | 2032 | 100 | 6.3 | 0.4 | 0.1 |
| Ingebrigtsen17 | 1996 | R | AD | 91 | 13–15 | 88 | 100 | 8.8 | 0 | 0 |
| Holmes16 | 1997 | P | ED | 264 | 14 | 264 | 100 | 12.1 | 1.5 | 0 |
| Miller15 | 1997 | P | ED | 2143 | 15 | 2143 | 100 | 5.1 | 0.2 | 0 |
ED=Emergency department; AD=admitted patients R=retrospective; P=prospective.