Table 3 Comparison of Aboriginal and non-Aboriginal probabilities of receipt of angiogram following IHD and MI events

Progressive adjustment:

Unadjusted

0.84 (0.78-0.90)

<0.0001

0.90 (0.83-0.96)

<0.01

Model 1

Age categories, sex

0.77 (0.72-0.83)

<0.0001

0.81 (0.75-0.87)

<0.0001

Model 2

Model 1 + SES

0.80 (0.75-0.86)

<0.0001

0.82 (0.76-0.88)

<0.0001

Model 3

Model 2 + private health insurance

0.84 (0.79-0.90)

<0.0001

0.84 (0.78-0.90)

<0.0001

Model 4

Model 3 + IHD category/MI subtype and angiography in the last year

0.87 (0.82-0.93)

<0.0001

0.86 (0.80-0.92)

<0.0001

Model 5 (comorbidities):

Model 5a

Model 4 + pre-existing IHD

0.89 (0.84-0.95)

<0.001

0.88 (0.82-0.94)

<0.001

Model 5b

Model 4 + chronic pulmonary disease

0.89 (0.83-0.95)

<0.001

0.87 (0.81-0.94)

<0.001

Model 5c

Model 4 + diabetes

0.89 (0.83-0.95)

<0.001

0.88 (0.82-0.94)

<0.01

Model 5d

Model 4 + HF

0.91 (0.86-0.97)

<0.01

0.90 (0.84-0.97)

<0.01

Model 5e

Model 4 + kidney disease

0.91 (0.85-0.97)

<0.01

0.91 (0.85-0.97)

<0.01

Model 6

Model 4 + all five comorbidities (i.e. full model)

0.95 (0.89-1.01)

0.10

0.94 (0.88-1.01)

0.08

Stratified by age ^(a)

Aged 25-54 years:

Model 1a

Model 1 but with age and age*age

0.83 (0.76-0.90)

<0.0001

0.85 (0.79-0.92)

<0.0001

Model 4a

Model 4 but with age and age*age

0.91 (0.85-0.99)

0.03

0.88 (0.82-0.95)

<0.001

Model 6a

Model 6 but with age and age*age

0.96 (0.89-1.04)

0.36

0.95 (0.88-1.02)

0.16

Aged 55-84 years:

Model 1a

Model 1 but with age and age*age

0.70 (0.63-0.79)

<0.0001

0.73 (0.63-0.84)

<0.0001

Model 4a

Model 4 but with age and age*age

0.78 (0.70-0.87)

<0.0001

0.79 (0.69-0.91)

<0.001

Model 6a

Model 6 but with age and age*age

0.87 (0.79-0.97)

0.01

0.88 (0.77-0.99)

0.04

Restricted to first event ^(a)

Aged 25-54 years:

Model 4a

Model 4 but with age and age*age

0.93 (0.85-1.01)

0.09

0.89 (0.83-0.97)

<0.01

Model 6a

Model 6 but with age and age*age

0.97 (0.89-1.05)

0.43

0.95 (0.88-1.02)

0.14

Aged 55-84 years:

Model 4a

Model 4 but with age and age*age

0.80 (0.72-0.90)

<0.001

0.79 (0.69-0.91)

<0.001

Model 6a

Model 6 but with age and age*age

0.88 (0.79-0.99)

0.03

0.87 (0.77-0.99)

0.04

Aged 25-54 years:

Model 4a

Model 4 but with age and age*age

0.92 (0.85-0.99)

0.04

(b)

Model 6a

Model 6 but with age and age*age

0.97 (0.89-1.04)

0.38

(b)

Aged 55-84 years:

Model 4a

Model 4 but with age and age*age

0.80 (0.72-0.89)

<0.0001

0.79 (0.69-0.91)

0.001

Model 6a

Model 6 but with age and age*age

0.88 (0.80-0.98)

0.02

0.88 (0.77-1.00)

0.05