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Table 4 Probability of procedures (%) by socioeconomic quintile (Q) and hazard ratios for patients with angina

From: Universal health care no guarantee of equity: Comparison of socioeconomic inequalities in the receipt of coronary procedures in patients with acute myocardial infarction and angina

  

Model 1

Model 2

Model 3

 

%

HR

95% CI

p

HR

95% CI

p

HR

95% CI

p

Angiography

          

   SES Q1

67.7

1.00

-

-

1.00

-

-

1.00

-

-

   SES Q2

68.3

1.04

0.96-1.13

.361

1.02

0.94-1.11

.667

1.03

0.94-1.12

.550

   SES Q3

72.3

1.12

1.03-1.22

.008

1.05

0.96-1.14

.305

1.05

0.96-1.15

.287

   SES Q4

74.0

1.21

1.11-1.32

<.001

1.08

0.98-1.18

.118

1.08

0.98-1.18

.118

   SES Q5

75.0

1.27

1.16-1.38

<.001

1.11

1.01-1.21

.033

1.08

0.98-1.19

.131

Total

70.6

 

Trend

<.001

 

Trend

.017

 

Trend

.074

PTCA

          

   SES Q1

18.2

1.00

-

-

1.00

-

-

1.00

-

-

   SES Q2

22.3

1.23

1.05-1.44

.009

1.24

1.05-1.46

.009

1.20

1.02-1.42

.029

   SES Q3

24.7

1.39

1.18-1.62

<.001

1.39

1.18-1.63

<.001

1.31

1.11-1.54

.002

   SES Q4

25.2

1.43

1.21-1.68

<.001

1.34

1.13-1.58

.001

1.23

1.03-1.47

.019

   SES Q5

28.3

1.65

1.41-1.93

<.001

1.52

1.29-1.80

<.001

1.32

1.10-1.57

.003

Total

23.4

 

Trend

<.001

 

Trend

<.001

 

Trend

.005

CABG

          

   SES Q1

15.3

1.00

-

-

1.00

-

-

1.00

-

-

   SES Q2

17.8

1.16

0.96-1.40

.115

1.12

0.93-1.36

.228

1.11

0.92-1.35

.277

   SES Q3

17.3

1.12

0.92-1.35

.259

1.07

0.88-1.30

.493

1.04

0.86-1.28

.654

   SES Q4

20.4

1.36

1.13-1.65

.001

1.28

1.05-1.56

.014

1.20

0.99-1.47

.069

   SES Q5

20.5

1.38

1.14-1.66

.001

1.30

1.03-1.55

.024

1.14

0.93-1.42

.211

Total

17.7

 

Trend

<.001

 

Trend

.010

  

.144

CARP

          

   SES Q1

30.2

1.00

-

-

1.00

-

-

1.00

-

-

   SES Q2

35.5

1.20

1.06-1.35

.003

1.18

1.05-1.34

.008

1.15

1.01-1.31

.025

   SES Q3

37.2

1.27

1.12-1.43

<.001

1.25

1.10-1.41

.001

1.19

1.05-1.35

.007

   SES Q4

39.9

1.40

1.24-1.59

<.001

1.30

1.15-1.49

<.001

1.20

1.06-1.38

.006

   SES Q5

42.4

1.53

1.36-1.73

<.001

1.41

1.24-1.61

<.001

1.22

1.07-1.90

.004

Total

36.4

 

Trend

<.001

 

Trend

<.001

 

Trend

.004

  1. Notes.
  2. 1. PTCA = percutaneous transluminal coronary angioplasty; CABG = coronary artery bypass grafting; CARP = coronary artery revascularisation procedure (PTCA or CABG).
  3. 2. SES Q1 is most disadvantaged quintile.
  4. 3. SES Q1, n = 1645; SES Q2, n = 1593; SES Q3, n = 1441; SES Q4, n = 1248; SES Q5, n = 1295.
  5. 4. Cumulative probability of a procedure at one year was estimated using the Kaplan-Meier estimator.
  6. 5. Because some patients had both CABG and PTCA on the same day, the % of patients undergoing first CARP procedures does not equal % PTCA plus % CABG.
  7. 6. Hazard ratios estimated using Cox regression and adjusted for age in Model 1, as well as other confounding variables (country of birth, Aboriginal/Torres Strait Islander status, marital status, comorbidities, area of residence and hospital area) in Model 2 and confounding and mediating variables (private insurance and private hospital) in Model 3.
  8. 7. Proportional hazards assumption violated for CABG (p-value for global test of proportional hazards assumption = .006) in Model 2.
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BMC Public Health

ISSN: 1471-2458

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