Table 1 Characteristics of patients undergoing revision THA by BMI class

N (%)

98,670

351 (0.4%)

82,246 (83.4%)

9,510 (9.6%)

6,563 (6.7%)

Age (SD)

66.5 (12.8)

72.3 (13.8)

67.2 (13.0)

63.8 (11.1)

61.7 (10.3)

 < 0.001

Sex

 < 0.001

 Men

43,401 (44.0%)

98 (27.9%)

36,729 (44.7%)

4,219 (44.4%)

2,355 (35.9%)

 Women

55,269 (56.0%)

253 (72.1%)

45,517 (55.3%)

5,291 (55.6%)

4,208 (64.1%)

Race/Ethnicity

 < 0.001

 White

85,413 (86.6%)

309 (88.0%)

71,685 (87.2%)

8,011 (84.2%)

5,408 (82.4%)

 Black

8.170 (8.3%)

27 (7.7%)

6,335 (7.7%)

944 (9.9%)

864 (13.2%)

 Hispanic

4,238 (4.3%)

*

3,477 (4.2%)

494 (5.2%)

261 (4.0%)

 Asian American/ Pacific Islander

849 (0.9%)

*

749 (0.9%)

61 (0.6%)

30 (0.5%)

Income Quartile

 < 0.001

 Q1

22,699 (23.0%)

104 (29.6%)

18,672 (22.7%)

2,166 (22.8%)

1,757 (26.8%)

 Q2

25,537 (25.9%)

98 (27.9%)

21,136 (25.7%)

2,492 (26.2%)

1,811 (27.6%)

 Q3

25,248 (25.6%)

71 (20.2%)

21,050 (25.6%)

2,438 (25.6%)

1,689 (25.7%)

 Q4

25,186 (25.5%)

78 (22.2%)

21,388 (26.0%)

2,414 (25.4%)

1,306 (19.9%)

Payer Status

 < 0.001

 Medicare

61,709 (62.5%)

275 (78.4%)

52,521 (63.9%)

5,300 (55.7%)

3,613 (55.1%)

 Medicaid

4,550 (4.6%)

12 (3.4%)

3,687 (4.5%)

463 (4.9%)

388 (5.9%)

 Private

28,281 (28.7%)

58 (16.5%)

22,648 (27.5%)

3,273 (34.4%)

2,302 (35.1%)

 Self-Pay

750 (0.8%)

*

635 (0.8%)

66 (0.7%)

47 (0.7%)

 No Charge

135 (0.1%)

*

111 (0.1%)

14 (0.2%)

*

 Other

3,245 (3.3%)

*

2,644 (3.2%)

394 (4.1%)

203 (3.1%)

Hospital Setting

 < 0.001

 Rural

6,456 (6.5%)

24 (6.8%)

5,449 (6.6%)

558 (5.9%)

425 (6.5%)

 Urban Non-Teaching

34,693 (35.2%)

118 (33.6%)

29,394 (35.7%)

3,015 (31.7%)

2,166 (33.0%)

 Urban Teaching

57,521 (58.3%)

209 (59.5%)

47,403 (57.6%)

5,937 (62.4%)

3,972 (60.5%)

 Elixhauser Comorbidity Index Score (SD)

2.2 (1.8)

3.3 (2.2)

2.0 (1.7)

3.1 (1.9)

3.5 (2.0)

 < 0.001