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Table 2 Relative odds of 30-day and 365-day mortality for Aboriginal compared with non-Aboriginal people with stepwise adjustment for covariates

From: Mortality after admission for acute myocardial infarction in Aboriginal and non-Aboriginal people in New South Wales, Australia: a multilevel data linkage study

30-day mortality models

Model

Adjusted for:

OR

95% CI

p-value

1A

Hospital of admissiona

0.61

0.48-0.78

<.001

 

Individual covariates

   

2A

+ Age group, sex, year of admission

1.07

0.83-1.37

.612

3A

+ Comorbid conditionsb

0.98

0.76-1.27

.886

4A

+ Remoteness of residencec

0.95

0.73-1.24

.728

5A

+ Socio-economic statusd

0.95

0.73-1.23

.684

 

Hospital covariates e

   

6A

+ Remoteness of hospitalc

0.94

0.72-1.22

.617

7A

+ Average acute admissions per year

(- Remoteness of hospital)

0.95

0.73-1.23

.676

8A

+ On-site angiography

(- Average acute admissions per year)

0.94

0.73-1.23

.665

365-day mortality models

Model

Adjusted for:

OR

95% CI

p-value

1B

Hospital of admissiona

0.64

0.53-0.77

<.001

 

Individual covariates

   

2B

+ Age group, sex, year of admission

1.34

1.10-1.63

.003

3B

+ Comorbid conditionsb

1.12

0.91-1.38

.282

4B

+ Remoteness of residencec

1.11

0.90-1.37

.317

5B

+ Socio-economic statusd

1.11

0.90-1.36

.345

 

Hospital covariates e

   

6B

+ Remoteness of hospitalc

1.09

0.89-1.35

.401

7B

+ Average acute admissions per year

(- Remoteness of hospital)

1.11

0.90-1.36

.336

8B

+ On-site angiography

(- Average acute admissions per year)

1.10

0.90-1.36

.350

  1. OR, odds ratio; CI, confidence interval.
  2. a Hospital of admission adjusted for in a two-level random intercept model with patients nested within hospitals.
  3. b Comorbid conditions with one-year look-back, including comorbidities on current admission and any admissions in the previous year.
  4. c Accessibility/Remoteness Index of Australia (ARIA+) based on statistical local area of residence for individuals or hospital postcode for hospitals.
  5. d Socio-Economic Indices for Areas (SEIFA) Index of Relative Socio-Economic Disadvantage population quintiles based on statistical local area of residence.
  6. e Hospital covariates added one at a time to the adjusted models.