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Table 4 Independent predictors for receipt of coronary angiography in MI events

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

 

Receipt of coronary angiography in MI events

 

Whole cohort (n = 8,722 events)

Aged 25-54 years (n = 1,903 events)

Aged 55-84 years (n = 6,869 events)

 

RR (95%CI)

p value

RR (95%CI)

p value

RR (95%CI)

p value

Aboriginal

0.94 (0.88-1.01)

0.08

0.95 (0.88-1.02)

0.16

0.88 (0.77-0.99)

0.04

Age groups

      

25-34 years

1.01 (0.94-1.07)

0.87

    

35-44 years

1.02 (0.99-1.04)

0.19

    

45-54 years

1

     

55-64 years

1.00 (0.98-1.02)

0.87

    

65-74 years

0.97 (0.95-0.99)

0.01

    

75-84 years

0.73 (0.71-0.76)

<0.0001

    

Age

  

1.01 (0.98-1.03)

0.16

1.20 (1.17-1.24)

<0.0001

Age*age

  

1.00 (0.99-1.00)

0.51

0.99 (0.99-0.99)

<0.0001

Sex: Female

0.94 (0.92-0.96)

<0.0001

1.00 (0.97-1.04)

0.90

0.94 (0.91-0.96)

<0.0001

SES quartiles

      

1st quartile(a)

1

 

1

 

1

 

2nd quartile

1.01 (0.98-1.04)

0.44

0.99 (0.95-1.03)

0.50

1.02 (0.98-1.05)

0.37

3rd quartile

1.00 (0.97-1.03)

0.83

0.99 (0.95-1.04)

0.74

1.00 (0.96-1.04)

0.99

4th quartile(b)

0.99 (0.97-1.02)

0.70

1.00 (0.96-1.04)

0.95

0.99 (0.95-1.03)

0.54

No private health insurance

0.92 (0.90-0.93)

<0.01

0.97 (0.95-0.99)

0.01

0.91 (0.88-0.93)

<0.01

MI subtype(c)

      

Transmural

1.10 (1.09-1.12)

<0.0001

1.04 (1.01-1.07)

<0.01

1.12 (1.10-1.15)

<0.0001

Subendocardial/other

1

 

1

 

1

 

Coronary angiography in the previous year

0.74 (0.67-0.81)

<0.0001

0.77 (0.64-0.92)

<0.01

0.73 (0.66-0.82)

<0.0001

Pre-existing IHD(d)

0.95 (0.92-0.98)

<0.01

1.00 (0.93-1.07)

0.99

0.95 (0.92-0.99)

<0.01

Chronic pulmonary disease

0.89 (0.85-0.93)

<0.0001

0.85 (0.73-0.97)

0.02

0.89 (0.85-0.94)

<0.0001

Diabetes

0.99 (0.97-1.02)

0.51

0.95 (0.91-0.99)

0.01

1.00 (0.97-1.03)

0.78

HF

0.75 (0.72-0.79)

<0.0001

0.88 (0.80-0.97)

<0.01

0.75 (0.71-0.79)

<0.0001

Kidney disease

0.78 (0.73-0.81)

<0.0001

0.71 (0.57-0.89)

<0.01

0.79 (0.74-0.85)

<0.0001

  1. (a)most disadvantaged; (b)least disadvantaged; (c)MI subtype was based on ICD-10-AM coding terminology; (d)excluding incident IHD.
  2. RR = Risk ratio; 95% CI = 95% confidence interval; IHD = ischaemic heart disease; HF = heart failure; MI = myocardial infarction; SES = socio-economic status.
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International Journal for Equity in Health

ISSN: 1475-9276

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