Table 1 Patient characteristics in the pre- and postmatched samples in 2009

Total

8,077

238,499

8,073

30,514

Sex

0.052

0.9246

Male

3,929

48.6

118,636

49.7

(0.022)

3,929

48.7

14,833

48.7

(0.001)

Female

4,148

51.4

119,863

50.3

4,144

51.3

15,681

51.3

Age group

< 0.0001

0.9949

< 55

2,639

32.7

62,857

26.4

(0.305)

2,638

32.7

10,001

32.8

(0.003)

56–65

3,044

37.7

76,374

32.0

3,042

37.7

11,501

37.7

66–75

1,874

23.2

64,696

27.1

1,873

23.2

7,068

23.2

76+

520

6.4

34,572

14.5

520

6.4

1,944

6.4

DCSI ^a

< 0.0001

0.8229

Score 0

3,723

46.1

123,712

51.9

(0.130)

3,723

46.1

14,227

46.6

(0.012)

Score 1

2,342

29.0

57,070

23.9

2,340

29.0

8,809

28.9

Score 2

1,184

14.7

33,310

14.0

1,184

14.7

4,438

14.5

Score 3+

828

10.3

24,407

10.2

826

10.2

3,040

10.0

CCI ^b

0.0002

0.2217

Score 0

4,688

58.0

134,882

56.6

(0.047)

4,688

58.1

17,976

58.9

(0.022)

Score 1

2,448

30.3

72,229

30.3

2,446

30.3

9,175

30.1

Score 2+

941

11.7

31,388

13.2

939

11.6

3,363

11.0

Accreditation level of hospital

< 0.0001

0.9607

Medical centre

1,640

20.3

57,809

24.2

(0.474)

1,639

20.3

6,183

20.3

(0.007)

Regional hospital

3,228

40.0

51,823

21.7

3,225

40.0

12,104

39.7

District hospital

1,369

17.0

33,846

14.2

1,369

17.0

5,213

17.1

Community clinic

1,840

22.8

95,021

39.8

1,840

22.8

7,014

23.0

Location of hospital

< 0.0001

0.9314

Taipei and northern

2,835

35.1

115,169

48.3

(0.296)

2,833

35.1

10,824

35.5

(0.008)

Central

1,475

18.3

33,806

14.2

1,474

18.3

5,566

18.2

Southern/Kaoping

3,638

45.0

82,769

34.7

3,637

45.1

13,640

44.7

Eastern

129

1.6

6,755

2.83

129

1.6

484

1.6