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Table 5 Demographics of matched pairs (3:1) in the study population

From: Delayed surgery is associated with adverse outcomes in patients with hip fracture undergoing hip arthroplasty

 

Matched pairs (3:1)

 

Early

Matched Delayed

P value

N

94,356

31,452

 

Age stratification, in years old, n (%)

 18–39

73 (0.1)

36 (0.1)

0.085

 40–49

599 (0.6)

225 (0.7)

 50–59

3507 (3.7)

1179 (3.7)

 60–69

9413 (10.0)

3257 (10.4)

 70–79

25,921 (27.5)

8714 (27.7)

 80–89

46,854 (49.7)

15,353 (48.8)

 >  = 90

7989 (8.5)

2688 (8.5)

Gender, n (%)

 Male

30,573 (32.4)

10,326 (32.8)

0.360

 Female

63,779 (67.6)

21,125 (67.2)

 Missing

4 (0.0)

1 (0.0)

Race, n (%)

 White

74,439 (78.9)

24,492 (77.9)

0.189

 Non-white

11,268 (11.9)

3878 (12.3)

 Missing

8649 (9.2)

3082 (9.8)

Insurance, n (%)

 Medicare

83,845 (88.9)

27,671 (88.0)

0.132

 Medicaid

1753 (1.9)

605 (1.9)

 Private

6496 (6.9)

2387 (7.6)

 Self-pay

849 (0.9)

296 (0.9)

 No charge

103 (0.1)

35 (0.1)

 Other

1179 (1.2)

416 (1.3)

 Missing

131 (0.1)

42 (0.1)

Charlson Comorbidity Score, n (%)

 0

23,555 (25.0)

7916 (25.2)

0.351

 1

29,798 (31.6)

9805 (31.2)

 2

16,244 (17.2)

5469 (17.4)

 >  = 3

23,919 (25.3)

7952 (25.3)

 Missing

840 (0.9)

310 (1.0)

Weekend admission, n (%)

 No

69,101 (73.2)

22,634 (72.0)

0.087

 Yes

25,255 (26.8)

8818 (28.0)

Elective admission, n (%)

 No

89,658 (95.0)

29,886 (95.0)

1

 Yes

4557 (4.8)

1519 (4.8)

 Missing

141 (0.1)

47 (0.1)