Table 2.
Postoperative complication rates by the procedure type.
| Perioperative metrics | Unilateral THA (n = 97,804) | Bilateral THAa (n = 587) | P-valueb |
|---|---|---|---|
| Perioperative metrics | |||
| Operation time (min) | 93.3 | 161.4 | P < .001 |
| Length of hospital stay (days) | 2.93 | 3.13 | P = .308 |
| Discharge destination other than home | 21,904 (22.4) | 221 (37.6) | P < .001 |
| Unplanned readmission (%) | 3268 (3.3) | 18 (3.1) | P = .805 |
| Unplanned reoperation (%) | 1957 (2.0) | 14 (2.4) | .460 |
| Death (%) | 131 (0.1) | 0 (0.0) | P = 1.000 |
| Deep venous thrombosis (%) | 393 (0.4) | 0 (0.0) | P = .183 |
| Pneumonia (%) | 328 (0.3) | 3 (0.5) | P = .454 |
| Pulmonary embolism (%) | 260 (0.3) | 1 (0.2) | P = 1.000 |
| Renal insufficiency (%) | 103 (0.1) | 0 (0.0) | P = 1.000 |
| Urinary tract infection | 1017 (1.0) | 7 (1.2) | P = .680 |
| Cerebrovascular accident (%) | 89 (0.1) | 1 (0.2) | P = .417 |
| Cardiac arrest (%) | 68 (0.1) | 0 (0.0) | P = 1.000 |
| Myocardial infarction (%) | 229 (0.2) | 1 (0.2) | P = 1.000 |
| Bleeding requiring transfusion (%) | 10,682 (10.9) | 175 (29.8) | P < .001 |
| Superficial surgical site infection (%) | 674 (0.7) | 6 (1.0) | P = .309 |
| Deep surgical site infection (%) | 290 (0.3) | 7 (1.2) | P = .002 |
| Wound disruption (%) | 108 (0.1) | 2 (0.3) | P = .140 |
a
Simultaneous or consecutive during the same intraoperative setting not specified.
b
Calculated using Fisher's exact test for categorical variables and independent samples t-test for continuous variables.