Table 1 Characteristics of first IHD cases (principal diagnosis) in Western Australia 2000–2008, by Aboriginality
| Â | Non-aboriginal | Aboriginal | ||||
|---|---|---|---|---|---|---|
| Â | Number | (%) | Number | (%) | p-value | |
Total patients | Â | 35,702 | Â | 1602 | Â | Â |
DAMA | in incident admission | 172 | (0.5) | 52 | (3.2) | p<0.0001 |
Sex | Male | 24517 | (68.7) | 881 | (55.0) | p<0.0001 |
| Â | Female | 11185 | (31.3) | 721 | (45.0) | |
Age | mean (years) | 61.9 | Â | 49.5 | Â | p<0.0001 |
Residence | Metropolitan | 28362 | (79.4) | 515 | (32.1) | p<0.0001 |
| Â | Regional | 6130 | (17.2) | 383 | (23.9) | |
| Â | Very Remote | 1185 | (3.3) | 702 | (43.8) | |
| Â | Unknown | 25 | (0.1) | 2 | (0.1) | |
Social disadvantage | 1 (High disadvantage) | 7423 | (20.8) | 857 | (53.5) | p<0.0001 |
| Â | 2 | 9552 | (26.8) | 413 | (25.8) | |
| Â | 3 | 6949 | (19.5) | 207 | (12.9) | |
| Â | 4 (Low disadvantage) | 11518 | (32.3) | 96 | (6) | |
| Â | Unknown | 260 | (0.7) | 29 | (1.8) | |
Hospital type | Metro Teaching | 19161 | (53.7) | 1036 | (64.7) | p<0.0001 |
| Â | Metro Non-Teaching | 1653 | (4.6) | 53 | (3.3) | |
| Â | Regional | 1386 | (3.9) | 231 | (14.4) | |
| Â | District | 1102 | (3.1) | 255 | (15.9) | |
| Â | Private (Not public funded) | 12400 | (34.7) | 27 | (1.7) | |
Admission type | Booked | 14381 | (40.3) | 263 | (16.4) | p<0.0001 |
| Â | Emergency | 21321 | (59.7) | 1339 | (83.6) | |
IHD diagnosis | MI | 11782 | (33) | 655 | (40.9) | p<0.0001 |
| Â | UA | 7634 | (21.4) | 377 | (23.5) | |
| Â | Other IHD | 16286 | (45.6) | 570 | (35.6) | |
Revascularisation in episode | Yes | 25893 | (72.5) | 1241 | (77.5) | p<0.0001 |
No | 9809 | (27.5) | 361 | (22.5) | ||
Charlson score | Mean | 1.3 | Â | 2.3 | Â | p<0.0001 |
5-year history of alcohol/mental health admission | Neither | 33111 | (92.7) | 1117 | (69.7) | p<0.0001 |
Alcohol | 1121 | (3.1) | 351 | (21.9) | ||
Mental Health | 1141 | (3.2) | 60 | (3.7) | ||
Both | 329 | (0.9) | 74 | (4.6) | ||
Length of stay | mean (days) | 3.9 | Â | 6.1 | Â | P<0.0001 |
DAMA in previous 10 years | Yes | 334 | (0.9) | 250 | (15.6) | p<0.0001 |
No | 35368 | (99.1) | 1352 | (84.4) | ||