Table 1.
Individual and hospital characteristics of Aboriginal and non-Aboriginal people admitted with acute myocardial infarction
| Aboriginal (n = 1183) | Non- Aboriginal (n = 58877) | χ2p-value | |||
|---|---|---|---|---|---|
| |
N |
% |
N |
% |
|
|
Individual characteristic |
|
|
|
|
|
| Age group |
|
|
|
|
|
| 25-34 |
47 |
4.0 |
421 |
0.7 |
<.001 |
| 35-44 |
257 |
21.7 |
2829 |
4.8 |
|
| 45-54 |
360 |
30.4 |
8579 |
14.6 |
|
| 55-64 |
265 |
22.4 |
13144 |
22.3 |
|
| 65-74 |
180 |
15.2 |
15410 |
26.2 |
|
| 75-84 |
74 |
6.3 |
18481 |
31.4 |
|
| Sex |
|
|
|
|
|
| Male |
727 |
61.5 |
39950 |
67.9 |
<.001 |
| Female |
456 |
38.5 |
18914 |
32.1 |
|
| Comorbid conditionsa |
|
|
|
|
|
| Diabetes with complications |
279 |
23.6 |
8903 |
15.1 |
<.001 |
| Cardiac dysrhythmias |
185 |
15.6 |
12539 |
21.3 |
<.001 |
| Congestive heart failure |
154 |
13.0 |
8350 |
14.2 |
.254 |
| Pulmonary disease |
136 |
11.5 |
5236 |
8.9 |
.002 |
| Chronic renal failure |
96 |
8.1 |
4143 |
7.0 |
.152 |
| Acute renal failure |
47 |
4.0 |
2729 |
4.6 |
.282 |
| Cerebrovascular disease |
36 |
3.0 |
2552 |
4.3 |
.030 |
| Paraplegia |
25 |
2.1 |
1341 |
2.3 |
.707 |
| Cancer |
15 |
1.3 |
1773 |
3.0 |
0.01 |
| Peripheral vascular disease |
12 |
1.0 |
1108 |
1.9 |
.029 |
| Shock |
11 |
0.9 |
1195 |
2.0 |
.008 |
| Pulmonary oedema |
9 |
0.8 |
685 |
1.2 |
.199 |
| Connective tissue disorder |
8 |
0.7 |
743 |
1.3 |
.073 |
| Dementia |
5 |
0.4 |
506 |
0.9 |
.105 |
| Severe liver disease |
2 |
0.2 |
103 |
0.2 |
.962 |
| Liver disease |
1 |
0.1 |
113 |
0.2 |
.615 |
| Socio-economic statusb |
|
|
|
|
|
| 1st quintile - least disadvantaged |
23 |
1.9 |
7832 |
13.3 |
<.001 |
| 2nd quintile |
109 |
9.2 |
9946 |
16.9 |
|
| 3rd quintile |
186 |
15.7 |
12726 |
21.6 |
|
| 4th quintile |
299 |
25.3 |
13102 |
22.3 |
|
| 5th quintile - most disadvantaged |
566 |
47.8 |
15258 |
25.9 |
|
| Remoteness of residencec |
|
|
|
|
|
| Major city |
307 |
26.0 |
34695 |
58.9 |
<.001 |
| Inner regional |
359 |
30.3 |
16319 |
27.7 |
|
| Outer regional |
366 |
30.9 |
7300 |
12.4 |
|
| Remote/very remote |
151 |
12.8 |
550 |
0.9 |
|
|
Hospital characteristic |
|
|
|
|
|
| Remoteness of hospitalc |
|
|
|
|
|
| Major city |
389 |
32.9 |
39456 |
67.0 |
<.001 |
| Inner regional |
247 |
20.9 |
11384 |
19.3 |
|
| Outer regional |
414 |
35.0 |
7297 |
12.4 |
|
| Remote/very remote |
133 |
11.2 |
726 |
1.2 |
|
| Average acute admissions per year | |||||
| Less than 1200 |
88 |
7.4 |
1245 |
2.1 |
<.001 |
| 1200-3899 |
182 |
15.4 |
3730 |
6.3 |
|
| 3900-7084 |
138 |
11.7 |
3842 |
6.5 |
|
| 7085-18399 |
443 |
37.4 |
19977 |
33.9 |
|
| 18400 or more |
332 |
28.1 |
30070 |
51.1 |
|
| On-site angiography |
|
|
|
|
|
| Yes |
315 |
26.6 |
25694 |
43.6 |
<.001 |
| No | 868 | 73.4 | 33170 | 56.4 | |
a Comorbid conditions with one-year look-back, including comorbidities on current admission and any admissions in the previous year.
b Socio-Economic Indices for Areas (SEIFA) Index of Relative Socio-Economic Disadvantage population quintiles based on statistical local area of residence.
c Accessibility/Remoteness Index of Australia (ARIA+) based on statistical local area of residence for individuals or hospital postcode for hospitals.