Table 1 Age, gender, race, and comorbidity of patients included in the study, by device type

N

41,104

14,069

27,035

Age (mean, (standard deviation))

77.9 (SD:12.0)

77.7 (SD:12.1)

78.0 (SD:11.9)

Age Category

 less than 60

3,436 (8.4%)

1,163 (8.3%)

2,273 (8.4%)

 60 to 69

5,299 (12.9%)

1,886 (13.4%)

3,413 (12.6%)

 70 to 79

9,169 (22.3%)

3,262 (23.2%)

5,907 (21.8%)

 80 to 84

7,101 (17.3%)

2,295 (16.3%)

4,806 (17.8%)

 85 and above

16,099 (39.2%)

5,463 (38.8%)

10,636 (39.3%)

Gender: Female

28,716 (69.9%)

9,691 (68.9%)

19,025 (70.4%)

Race

 African American

1,630 (4.0%)

519 (3.7%)

1,111 (4.1%)

 Caucasian

35,463 (86.3%)

12,561 (89.3%)

22,902 (84.7%)

 Hispanic

79 (0.2%)

-

79 (0.3%)

 NA

780 (1.9%)

278 (2.0%)

502 (1.9%)

 Other

2,751 (6.7%)

499 (3.5%)

2,252 (8.3%)

 Unavailable

401 (1.0%)

212 (1.5%)

189 (0.7%)

Elixhauser Score (mean, (standard deviation))

3.3 (SD:2.0)

3.4 (SD:2.1)

3.2 (SD:2.0)

Elixhauser Category

 0

2,141 (5.2%)

668 (4.7%)

1,473 (5.4%)

 1–2

13,673 (33.3%)

4,406 (31.3%)

9,267 (34.3%)

 3–4

15,074 (36.7%)

5,121 (36.4%)

9,953 (36.8%)

 5 + 

10,216 (24.9%)

3,874 (27.5%)

6,342 (23.5%)

Severity (1 to 4)*

 1

6,342 (15.4%)

2,265 (16.1%)

4,077 (15.1%)

 2

18,340 (44.6%)

6,168 (43.8%)

12,172 (45.0%)

 3

12,940 (31.5%)

4,398 (31.3%)

8,542 (31.6%)

 4

3,482 (8.5%)

1,238 (8.8%)

2,244 (8.3%)

Risk of Mortality (1 to 4)*

 1

10,503 (25.6%)

3,517 (25.0%)

6,986 (25.8%)

 2

16,552 (40.3%)

5,442 (38.7%)

11,110 (41.1%)

 3

10,967 (26.7%)

4,003 (28.5%)

6,964 (25.8%)

 4

3,082 (7.5%)

1,107 (7.9%)

1,975 (7.3%)

Mortality during Index

810 (2.0%)

259 (1.8%)

551 (2.0%)

Femoral Shaft Fracture

966 (2.4%)

359 (2.6%)

607 (2.2%)

Head Injury

1,545 (3.8%)

996 (7.1%)

549 (2.0%)

Intensive Care Unit Use

3,835 (9.3%)

1,322 (9.4%)

2,513 (9.3%)