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Table 1 Baseline characteristics at index admissions

From: A baseline profile of the Queensland Cardiac Record Linkage Cohort (QCard) study

Variables

First-time admissions (Nā€‰=ā€‰75,829)

Recurrent admissions (Nā€‰=ā€‰56,514)

All (Nā€‰=ā€‰132,343)

p-value

Age

61.62 (16.81)

70.7 (14.17)

65.5 (16.37)

ā€‰<ā€‰.001

Charlson index

1.59 (2.56)

3.17 (3.09)

2.28 (2.91)

ā€‰<ā€‰.001

Sex (maleā€‰=ā€‰1)

39,522 (0.52)

30,611 (0.54)

70,133 (0.53)

ā€‰<ā€‰.001

Indigenous (yesā€‰=ā€‰1)

1407 (0.02)

1952 (0.03)

3359 (0.03)

ā€‰<ā€‰.001

Hospital insurance (yesā€‰=ā€‰1)

39,779 (0.52)

23,968 (0.42)

63,747 (0.48)

ā€‰<ā€‰.001

Private hospitals (yesā€‰=ā€‰1)

37,806 (0.50)

20,771 (0.37)

58,577 (0.44)

ā€‰<ā€‰.001

Ward: Private shared

27,275 (0.36)

14,722 (0.26)

41,997 (0.32)

ā€‰<ā€‰.001

Ward: Private single

12,658 (0.17)

8240 (0.15)

20,898 (0.16)

ā€‰<ā€‰.001

Ward: Public

35,896 (0.47)

33,552 (0.59)

69,448 (0.52)

ā€‰<ā€‰.001

SEIFA Q1

12,282 (0.16)

10,938 (0.19)

23,220 (0.18)

ā€‰<ā€‰.001

SEIFA Q2

13,415 (0.18)

10,942 (0.19)

24,357 (0.18)

ā€‰<ā€‰.001

SEIFA Q3

15,222 (0.20)

11,948 (0.21)

27,170 (0.21)

ā€‰<ā€‰.001

SEIFA Q4

16,358 (0.22)

11,049 (0.20)

27,407 (0.21)

ā€‰<ā€‰.001

SEIFA Q5

17,982 (0.24)

11,568 (0.20)

29,550 (0.22)

ā€‰<ā€‰.001

Married

48,475 (0.64)

32,313 (0.57)

80,788 (0.61)

ā€‰<ā€‰.001

Widowed

9258 (0.12)

12,231 (0.22)

21,489 (0.16)

ā€‰<ā€‰.001

Never married

10,950 (0.14)

5864 (0.10)

16,814 (0.13)

ā€‰<ā€‰.001

Divorced separated

7146 (0.09)

6106 (0.11)

13,252 (0.10)

ā€‰<ā€‰.001

Multiday

35,664 (0.47)

34,942 (0.62)

70,606 (0.53)

ā€‰<ā€‰.001

Overnight

12,562 (0.17)

9227 (0.16)

21,789 (0.16)

ā€‰<ā€‰.001

Same-day

27,603 (0.36)

12,345 (0.22)

39,948 (0.30)

0.260

ED usage

39,574 (0.52)

37,404 (0.66)

76,978 (0.58)

ā€‰<ā€‰.001

Referrals: ED

31,534 (0.42)

30,008 (0.53)

61,542 (0.47)

ā€‰<ā€‰.001

Referrals: Private facilities

31,378 (0.41)

15,379 (0.27)

46,757 (0.35)

ā€‰<ā€‰.001

Referrals: Outpatients

8968 (0.12)

7657 (0.14)

16,625 (0.13)

ā€‰<ā€‰.001

Referrals: Transfer

2383 (0.03)

1613 (0.03)

3996 (0.03)

ā€‰<ā€‰.001

Comorbidity: 0

39,634 (0.55)

13,352 (0.24)

52,986 (0.41)

ā€‰<ā€‰.001

Comorbidity: 1

9414 (0.13)

7996 (0.14)

17,410 (0.14)

ā€‰<ā€‰.001

Comorbidity: 2+

23,592 (0.33)

34,533 (0.62)

58,125 (0.45)

ā€‰<ā€‰.001

Cardiac HAC

2562 (0.03)

2260 (0.04)

4822 (0.04)

ā€‰<ā€‰.001

Multiple day Cardiac HAC

2352 (0.07)

2105 (0.06)

4457 (0.06)

ā€‰<ā€‰.001

Acute admissions

75,012 (0.99)

55,455 (0.98)

130,467 (0.99)

ā€‰<ā€‰.001

  1. Baseline characteristics are presented as means (standard deviation) in the first two rows and frequency (percent) in the remaining. P-values represent t-test and Kruskalā€“Wallis test, respectively, differences in mean and median by incidence status of continuous and binary variables. We also conduct a Chi-squared test for categorical variables (e.g., SEIFA quintiles) and found that p-values were allā€‰<ā€‰0.01