All IHD (n = 5,377 events) | MI only (n = 1,823 events) | |||||
---|---|---|---|---|---|---|
Aboriginal | Non-Aboriginal | Aboriginal | Non-Aboriginal | |||
n = 1,059 events (794 patients) | n = 4,318 events (3,587 patients) | p value | n = 365 events (342 patients) | n = 1,458 events (1,386 patients) | p value | |
Age groups | <0.001 | <0.001 | ||||
25-34 years | 53 (5.0) | 31 (0.7) | 25 (6.8) | 10 (0.7) | ||
35-44 years | 222 (21.0) | 312 (7.2) | 83 (22.7) | 111 (7.6) | ||
45-54 years | 353 (33.3) | 760 (17.6) | 116 (31.8) | 295 (20.2) | ||
55-64 years | 247 (23.3) | 1,073 (24.8) | 87 (23.8) | 359 (24.6) | ||
65-74 years | 117 (11.0) | 1,051 (24.3) | 36 (9.9) | 333 (22.8) | ||
75-84 years | 67 (6.3) | 1,091 (25.3) | 18 (4.9) | 350 (24.0) | ||
Sex: female (%) | 465 (43.9) | 1,419 (32.9) | <0.001 | 120 (34.2) | 368 (25.2) | 0.001 |
Residential area (%) | <0.001 | <0.001 | ||||
Regional | 424 (40.0) | 3,431 (79.5) | 125 (34.2) | 1,128 (77.4) | ||
Remote | 635 (60.0) | 887 (20.5) | 240 (65.8) | 330 (22.6) | ||
SES (%) | <0.001 | <0.001 | ||||
1st quartile(a) | 576 (54.4) | 1,218 (28.2) | 209 (57.3) | 401 (27.5) | ||
2nd quartile | 209 (19.7) | 1,205 (27.9) | 63 (17.3) | 425 (29.1) | ||
3rd quartile | 166 (15.7) | 1,388 (32.1) | 50 (13.7) | 465 (31.9) | ||
4th quartile(b) | 108 (10.2) | 507 (11.7) | 43 (11.8) | 167 (11.5) | ||
Risk factors (%) | ||||||
Alcohol | 311 (29.4) | 234 (5.4) | <0.001 | 96 (26.3) | 59 (4.0) | <0.001 |
Smoking | 756 (71.4) | 2,388 (55.3) | <0.001 | 263 (72.1) | 779.(53.4) | <0.001 |
Comorbidities (%) | ||||||
Chronic pulmonary disease | 204 (19.3) | 483 (11.2) | <0.001 | 56 (15.3) | 128 (8.8) | <0.001 |
Diabetes | 608 (57.4) | 1,113 (25.8) | <0.001 | 205 (56.2) | 340 (23.3) | <0.001 |
HF | 238 (22.5) | 666 (15.4) | <0.001 | 79 (21.6) | 230 (15.8) | 0.008 |
Kidney disease | 175 (16.5) | 316 (7.3) | <0.001 | 67 (18.4) | 110 (7.5) | <0.001 |
First ever IHD/MI event in 2005–09 (%) | 591 (55.8) | 3,035 (70.3) | <0.001 | 263 (72.1) | 1,241 (85.1) | <0.001 |
Private insurance (%) | 52 (4.9) | 1,181 (27.4) | <0.001 | 21 (5.8) | 470 (32.2) | <0.001 |
IHD category (%) | 0.497 | |||||
MI | 365 (33.8) | 1,458 (33.8) | ||||
Unstable angina | 340 (32.1) | 1,468 (34.0) | ||||
Other IHD | 354 (33.4) | 1,392 (32.2) | ||||
MI type (%)(c) | ||||||
Transmural | 167 (45.8) | 641 (44.0) | 0.078 | |||
Subendocardial | 144 (39.5) | 527 (36.1) | ||||
Other | 54 (14.8) | 290 (19.9) |