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Table 5 Probability of procedures (%) by socioeconomic quintile (Q) and adjusted hazard ratios for patients with angina, stratified by emergency and elective admission

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

 

Emergency admissions

(n = 4072)

Elective admissions

(n = 3329)

 

%

HR

95% CI

p

%

HR

95% CI

p

Angiography

        

   SES Q1

50.3

1.00

-

-

95.3

1.00

-

-

   SES Q2

50.2

1.03

0.90-1.17

.716

91.1

0.93

0.83-1.05

.249

   SES Q3

56.1

1.15

1.00-1.31

.045

92.8

0.94

0.83-1.05

.271

   SES Q4

56.6

1.14

0.99-1.31

.068

91.6

0.93

0.83-1.05

.233

   SES Q5

58.2

1.21

1.05-1.40

.010

89.4

0.87

0.77-0.98

.021

Total

53.3

 

Trend

003

91.8

 

Trend

.037

PTCA

        

   SES Q1

14.7

1.00

-

-

24.0

1.00

-

-

   SES Q2

17.4

1.20

0.94 -1.52

.140

28.8

1.27

1.01-1.59

.038

   SES Q3

20.7

1.40

1.11-1.77

.005

30.0

1.34

1.06-1.67

.012

   SES Q4

16.8

1.05

0.81-1.37

.715

34.2

1.54

1.23-1.92

<.001

   SES Q5

23.1

1.49

1.16-1.92

.002

33.2

1.47

1.17-1.84

.001

Total

18.1

 

Trend

015

30.2

 

Trend

<.001

CABG

        

   SES Q1

9.3

1.00

-

-

25.5

1.00

-

-

   SES Q2

10.8

1.17

0.85-1.62

.321

27.4

1.04

0.81-1.32

.776

   SES Q3

9.4

1.01

0.72-1.41

.962

28.2

1.09

0.85-1.39

.491

   SES Q4

11.1

1.28

0.90-1.81

.164

31.3

1.24

0.97-1.58

.085

   SES Q5

9.7

1.04

0.71-1.53

.841

30.4

1.20

0.94-1.54

.139

Total

9.8

 

Trend

608

28.6

 

Trend

.049

CARP

        

   SES Q1

22.0

1.00

-

-

43.1

1.00

-

-

   SES Q2

26.0

1.20

0.99-1.46

.059

47.4

1.15

0.98-1.36

.095

   SES Q3

27.9

1.28

1.05-1.55

.013

48.9

1.20

1.03-1.42

.032

   SES Q4

25.6

1.13

0.91-1.39

.271

54.2

1.37

1.16-1.62

<.001

   SES Q5

29.9

1.35

1.09-1.67

.005

53.0

1.34

1.13-1.58

.001

Total

25.7

 

Trend

.020

49.5

 

Trend

<.001

  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. Emergency patients: SES Q1, n = 1008; SES Q2, n = 886; SES Q3, n = 805; SES Q4, n = 627; SES Q5, n = 596; Elective patients: SES Q1, n = 637; SES Q2, n = 707; SES Q3, n = 636; SES Q4, n = 621; SES Q5, n = 699.
  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, country of birth, Aboriginal/Torres Strait Islander status, marital status, comorbidities, area of residence and hospital area (Model 2).
  8. 7. Proportional hazards assumption violated for CABG in elective admissions model (p-value for global test of proportional hazards assumption = .028).