Table 2.
Characteristics of Revision TKA patients
| All Patients (N = 36108) |
No Complication (N = 26276) |
In-hospital Complication (N = 8955) |
90-day Readmission Complication (N = 877) |
P-value* | |
|---|---|---|---|---|---|
| Age, mean (SD) | 75.3 (6.4) | 75.3 (6.4) | 75.5 (6.5) | 75.6 (6.6) | 0.0118 |
| Sex, women (%) | 21644 (59.9) | 16565 (63.0) | 4605 (51.4) | 474 (54.1) | <0.0001 |
| Race, number (%) | |||||
| White | 32334 (89.6) | 23524 (89.5) | 8030 (89.7) | 780 (88.9) | 0.7774 |
| Black | 2650 (7.3) | 1976 (7.5) | 602 (6.7) | 72 (8.2) | 0.0266 |
| Other | 1022 (2.8) | 699 (2.7) | 301 (3.4) | 22 (2.5) | 0.0022 |
| Missing | 102 (0.3) | 77 (0.3) | 22 (0.3) | 3 (0.3) | 0.7242 |
| Comorbidity, number (%) |
|||||
| Diabetes | 8434 (23.4) | 6018 (22.9) | 2199 (24.6) | 217 (24.7) | 0.0038 |
| CHF | 2492 (6.9) | 1455 (5.5) | 970 (10.8) | 67 (7.6) | <0.0001 |
| Obesity | 3677 (10.2) | 2784 (10.6) | 795 (8.9) | 98 (11.2) | <0.0001 |
| Renal failure | 1791 (5.0) | 1122 (4.3) | 624 (7.0) | 45 (5.1) | <0.0001 |
| Number of comorbid conditions, mean (SD) |
2.2 (1.4) | 2.2 (1.4) | 2.4 (1.4) | 2.3 (1.4) | <0.0001 |
*
P-values compare differences among no-complication, in-hospital complication, and 90-day readmission complication groups
*
Patients who died in-hospital would not contribute to the 90-day readmission complication group numerator or denominator (172 patients died in-hospital)
*
Patients who experienced both an in-hospital and readmission complication were counted only in the in-hospital complication group.