Table 1 Characteristics of patients who underwent primary total elective hip or knee arthroplasty, 2013–2020
Characteristic | Overall cohort (n = 27,360) | SSIs (n = 235) | No SSIs (n = 27,125) | p-value |
|---|---|---|---|---|
Age (years), median (IQR) | 66 (59–73) | 66 (59–72) | 66 (59–73) | 0.686†|
Male | 11,836 (43.26) | 129 (54.89) | 11,707 (43.16) |  < 0.001‡ |
Charlson comorbidity index |  |  |  | 0.258‡ |
 0 | 23,616 (86.32) | 195 (82.98) | 23,421 (86.34) |  |
 1 | 2691 (9.84) | 27 (11.49) | 2664 (9.82) |  |
  > 2 | 1053 (3.85) | 13 (5.53) | 1040 (3.83) |  |
Procedure type |  |  |  | 0.001‡ |
 Knee implantation | 16,561 (60.53) | 16,419 (60.53) | 142 (60.43) |  |
 Hip implantation | 10,799 (39.47) | 10,706 (39.47) | 93 (39.57) |  |
ICU admission | 33 (0.12) | 1 (0.43) | 32 (0.12) | 0.176‡ |
Length of hospital stay, median (IQR) | 3 (2,4) | 3 (2,5) | 3 (2,4) | 0.001†|
Discharge disposition |  |  |  | 0.012‡ |
 Home | 26,109 (95.43) | 221 (94.04) | 25,888 (95.44) |  |
 Transfer | 882 (3.22) | 10 (4.26) | 872 (3.21) |  |
 Long term care | 11 (0.04) | 0 | 11 (0.04) |  |
 Death | 13 (0.05) | 0 | 13 (0.05) |  |