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Table 3 Odds Ratios (OR) for discharge against medical advice during first-ever hospital episode for ischaemic heart disease, stratified by Aboriginality, Western Australia 2000-2008

From: Voting with their feet - predictors of discharge against medical advice in Aboriginal and non-Aboriginal ischaemic heart disease inpatients in Western Australia: an analytic study using data linkage

  

Aboriginal

Non-aboriginal

  

OR (95% CI)

OR (95% CI)

Sex

Male

1.27

(0.67 - 2.39)

2.50

(1.64 - 3.82)

 

Female

1.00

 

1.00

 

Age

 

0.96

(0.93 - 0.99)

0.97

(0.95 - 0.98)

Social disadvantage

1 (high)

1.07

(0.29 - 3.89)

1.24

(0.79 - 1.94)

2

1.00

(0.26 - 3.84)

0.87

(0.54 - 1.4)

3

0.86

(0.2 - 3.72)

1.51

(0.97 - 2.33)

4 (low)

1.00

 

1.00

 

Hospital type in combination with residential location

Private hospital

0.00

 

0.17

(0.08 - 0.37)

Rural hospital, metro residence

0.00

 

0.70

(0.1 - 5.08)

Rural hospital, rural residence

1.96

(0.97 - 3.98)

1.39

(0.89 - 2.19)

Metro hospital, rural residence

0.37

(0.15 - 0.89)

0.55

(0.29 - 1.03)

Metro hospital, metro residence

1.00

 

1.00

 

IHD diagnosis type

Other IHD

0.51

(0.21 – 1.20)

1.36

(0.85 - 2.18)

Unstable Angina

0.95

(0.46 – 1.98)

2.71

(1.89 – 3.87)

Myocardial infarct

1.00

 

1.00

 

Admission type

Emergency admission

4.72

(0.62 - 36.16)

6.24

(2.86 - 13.6)

 

Booked admission

1.00

 

1.00

 

Co-morbidity

Charlson score

0.83

(0.69 - 1)

1.05

(0.97 - 1.15)

History of admission for alcohol or mental health related issue

Alcohol only

2.44

(1.3 - 4.56)

3.06

(1.94 - 4.83)

Mental health only

n/a

 

1.71

(0.85 - 3.41)

Both

1.88

(0.61 - 5.83)

3.70

(1.82 - 7.5)

Neither

1.00

 

1.00

 

Admission period

2000-2004

0.82

(0.46 - 1.49)

0.90

(0.66 - 1.22)

2005-2008

1.00

 

1.00

 
  1. OR: odds ratio; 95% CI: 95% confidence interval.
  2. Aboriginal R-Square=0.153; Non- Aboriginal R-Square=0.138.