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Table 2 Adjusted multivariate logistic regression of factors associated with invitation to CR (n = 2,375)

From: Equity of access to cardiac rehabilitation: the role of system factors

VARIABLES

N (%)

N INVITED to CR (%)

ODDS RATIO: 95% CONFIDENCE INTERVAL

TOTAL

2,375

1,170 (49.3%)

NA

Sex

2,375

  

Males

1,503 (63%)

807 (69%)

1.00

Females

872 (37%)

363 (31%)

0.60 (0.39 to 0.92)

Age

   

   Age

2,375

NA

0.997 (0.996 0.998)

Marital status

2,340

  

   Not married

820 (35%)

339 (30%)

1.00

   Married

1,520 (65%)

808 (70%)

1.34 (1.05 to 1.71)

Main language spoken

2,357

  

   Non-English

76 (3%)

20 (2%)

1.00

   English

2,281 (97%)

1,138 (98%)

3.20 (1.63 to 6.32)

IRSD

2,355

  

   Less advantaged

634 (27%)

326 (28%)

1.00

   More advantaged

1,721 (73%)

835 (72%)

0.71 (0.52 to 0.97)

Hospitalisation year

2,375

  

   1996 & 1997

857 (36%)

315 (27%)

1.00

   1998, 1999 & 2000

1,518 (64%)

855 (73%)

3.61 (2.83 to 4.59)

Hospital billing status

2,373

  

   Public

1,759 (74%)

859 (73%)

1.00

   Private

443 (19%)

241 (21%)

1.44 (1.07 to 1.93)

   Other (WC, DVA)

171 (7%)

70 (6%)

1.66 (1.06 to 2.60)

Index cardiac diagnosis

2,375

  

   AMI

894 (38%)

632 (54%)

1.00

   UAP

975 (41%)

326 (28%)

0.07 (0.06 to 0.10)

   IHD

324 (14%)

195 (17%)

0.09 (0.06 to 0.13)

   HF

182 (8%)

17 (2%)

0.04 (0.02 to 0.06)

Length of hospital stay

2,375

  

Part 1

 

NA

402.20 (63.44 to 2549.91)

Part 2

 

NA

0.07 (0.03 to 0.16)

Hospital deaths

2,375

  

   Alive

2,263 (95%)

1,162 (99%)

1.00

   Dead

112 (5%)

8 (1%)

0.05 (0.02 to 0.11)

Bypass surgery

2,375

  

   No

1,985 (84%)

870 (74%)

1.00

   Yes

390 (16%)

300 (26%)

9.23 (5.96 to 14.30)

Angiography

2,375

  

   No

1,889 (80%)

842 (72%)

1.00

   Yes

486 (20%)

328 (28%)

1.57 (1.14 to 2.17)

Angioplasty/stenting

2,375

  

   No

2,051 (86%)

968 (83%)

1.00

   Yes

324 (14%)

202 (17%)

4.54 (3.08 to 6.68)

HF as a secondary diagnosis

2,375

  

   No

2,095 (88%)

1,076 (92%)

1.00

   Yes

280 (12%)

94 (8%)

0.55 (0.38 to 0.80)

Malignant cancer present

2,375

  

   No

2,315 (98%)

1,150 (98%)

1.00

   Yes

60 (3%)

20 (2%)

0.41 (0.20 to 0.83)

  1. Note: The APDC was the primary data source. The APDC is the official inclusive state-wide data collection of hospital inpatient statistics in NSW. The IRSD refers to Index of Relative Socioeconomic Disadvantage; UAP refers to unstable angina pectoris; IHD refers to ischaemic heart disease; HF refers to heart failure; main language spoken and region of birth were proxies for ethnicity. Age was transformed as a one part polynomial expression. Length of stay was transformed as a two part polynomial expression.
  2. Missing values for marital status (35), main language spoken (18), socioeconomic status (20) and billing status (2). Married/not married refers to those known to be married or partnered, compared with those known to be not married or partnered.
  3. NA not applicable.