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Table 1 Demographic and clinical profile of IHD and MI events originating from WA metropolitan hospitals

From: Disparities experienced by Aboriginal compared to non-Aboriginal metropolitan Western Australians in receiving coronary angiography following acute ischaemic heart disease: the impact of age and comorbidities

 

All IHD (n = 20,816 events)

MI only (n = 8,772 events)

 

Aboriginal

Non-Aboriginal

p value

Aboriginal

Non-Aboriginal

p value

 

n = 817 events

for 552 patients

n = 19,999 events

for 16,091 patients

 

n = 309 events

for 253 patients

n = 8,463 events

for 7,880 patients

 

Age groups

  

<0.001

  

<0.001

25-34 years

17 (2.1)

85 (0.4)

 

7 (2.3)

46 (0.5)

 

35-44 years

151 (18.5)

837 (4.2)

 

71 (23.0)

412 (4.9)

 

45-54 years

257 (31.5)

2,798 (14.0)

 

94 (30.4)

1,273 (15.0)

 

55-64 years

227 (27.8)

4,822 (24.1)

 

75 (24.3)

2,071 (24.5)

 

65-74 years

127 (15.5)

5,235 (26.2)

 

44 (14.2)

2,091 (24.7)

 

75-84 years

38 (4.7)

6,222 (31.1)

 

18 (5.8)

2,570 (30.4)

 

Sex: Female

381 (46.6)

6,976 (34.9)

<0.001

129 (41.7)

2,532 (29.9)

<0.001

SES quartiles

  

<0.001

  

<0.001

1st quartile(a)

436 (53.4)

5,240 (26.2)

 

161 (52.1)

2,015 (23.8)

 

2nd quartile

244 (29.9)

6,017 (30.1)

 

83 (26.9)

2,565 (30.3)

 

3rd quartile

95 (11.6)

4,488 (22.4)

 

46 (14.9)

1,933 (22.8)

 

4th quartile(b)

42 (5.1)

4,254 (21.3)

 

19 (6.1)

1,950 (23.0)

 

Comorbidities

      

Pre-existing IHD(c)

499 (61.1)

9,237 (46.2)

<0.001

146 (47.2)

2,487 (29.4)

<0.001

Chronic pulmonary disease

192 (23.5)

2,926 (14.6)

<0.001

58 (18.8)

1,036 (12.2)

0.001

Diabetes

463 (56.7)

5,790 (29.0)

<0.001

173 (56.0)

2,369 (28.0)

<0.001

HF

241 (29.5)

3,768 (18.4)

<0.001

101 (32.7)

1,767 (20.9)

<0.001

Kidney disease

180 (22.0)

2,144 (10.7)

<0.001

80 (25.9)

950 (11.2)

<0.001

Coronary angiography in the last year

134 (16.4)

2,447 (12.2)

<0.001

34 (11.0)

431 (5.1)

<0.001

Private health insurance (%)

61 (7.5)

7,277 (36.4)

<0.001

23 (7.4)

3,186 (37.6)

<0.001

IHD category (%)

  

0.04

   

MI

309 (37.8)

8,463 (42.3)

    

Unstable angina

315 (38.6)

7,042 (35.2)

    

Other IHD

193 (23.6)

4,494 (22.5)

    

MI subtype

     

0.08

Transmural

   

87 (28.2)

2,792 (33.0)

 

Subendocardial/other

   

222 (71.8)

5,671 (67.0)

 

Hospital at initial admission

  

<0.001

  

<0.001

Metropolitan tertiary

637 (78.0)

12,992 (65.0)

 

264 (85.4)

6,292 (74.3)

 

Metropolitan non-tertiary(d)

103 (12.6)

1,678 (8.4)

 

11 (3.6)

237 (2.8)

 

Private

77 (9.4)

5,329 (26.6)

 

34 (11.0)

1,934 (22.9)

 
  1. Statistical significance determined using chi-square tests. HF = heart failure; IHD = ischaemic heart disease; MI = myocardial infarction; SES = socio-economic status.
  2. (a)most disadvantaged; (b)least disadvantaged; (c)excluding incident IHD; (d)excluding private hospitals.
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International Journal for Equity in Health

ISSN: 1475-9276

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