Table 2.
Baseline characteristics of rTKA transplant and non-transplant patients identified over study period.
| No Transplant | Transplant | P | ||
|---|---|---|---|---|
| n=303,366 | n=464 | |||
| Sex, Female | 177,087 (58.4%) | 183 (39.4%) | <0.001 | |
| Age | ||||
| Mean | 65.4 | 61.6 | <0.001 | |
| <60 | 90,485 (29.8%) | 190 (40.9%) | 0.004 | |
| 60–75 | 66,990 (22.1%) | 43 (9.3%) | ||
| >75 | 145,891 (48.1%) | 231 (49.8%) | ||
| Indication | ||||
| PJI | 71,903 (23.7%) | 182 (39.2%) | <0.001 | |
| Fracture | 8683 (2.9%) | 6(1.3%) | ||
| Instability | 24,642 (8.1%) | 27 (5.8%) | ||
| Loosening | 73,079(24.1%) | 71 (15.3%) | ||
| Other | 125,058 (41.2%) | 178(38.4%) | ||
| ECI, mean | 2.44 | 3.88 | <0.001 | |
| LOS, mean | 4.89 | 7.08 | <0.001 | |
| Payer | ||||
| Medicaid | 11,750(3.9%) | 11 (2.4%) | 0.074 | |
| Medicare | 180,360 (59.6%) | 317 (68.2%) | ||
| Private | 90,837 (30%) | 126(27.1%) | ||
| Other | 19,827 (6.5%) | 11 (2.4%) | ||
| Income, Quartile | ||||
| 0–25% | 75,173 (25.2%) | 99 (22%) | 0.600 | |
| 25–50% | 80,537 (27%) | 120(26.6%) | ||
| 50–75% | 77,464 (25.9%) | 140(31%) | ||
| 75–100% | 65,426 (21.9%) | 92 (20.4%) | ||
| Hospital Type | ||||
| Rural | 23,802 (7.8%) | 31 (6.7%) | 0.015 | |
| Urban Non-Teach | 104,250 (34.4%) | 110(23.7%) | ||
| Urban Teaching | 175,314 (57.8%) | 324 (69.7%) | ||
| Hospital Size | ||||
| Large | 170,222 (56.1%) | 312 (67.2%) | 0.057 | |
| Medium | 72,705 (24%) | 84(18.1%) | ||
| Small | 60,439(19.9%) | 68(14.7%) | ||
| Emergent | 58,258(19.2%) | 103 (22.2%) | 0.400 |