Table 4.
Factors associated with hospital length of stay (LOS) after THA, on multiple linear regression analysis.
| Variable | Coefficient | P value | 95% confidence interval | |
|---|---|---|---|---|
| Preoperative | ||||
| Age | 0.024 | <.001 | 0.023 | 0.025 |
| Female sex | 0.236 | <.001 | 0.214 | 0.259 |
| White race | −0.776 | <.001 | −0.803 | −0.749 |
| BMI | 0.005 | <.001 | 0.003 | 0.007 |
| Diabetes | 0.070 | <.001 | 0.034 | 0.107 |
| Smoking | 0.089 | <.001 | 0.054 | 0.124 |
| COPD | 0.288 | <.001 | 0.227 | 0.349 |
| Dyspnea | 0.299 | <.001 | 0.243 | 0.356 |
| CHF | 0.781 | <.001 | 0.571 | 0.992 |
| Hypertension | 0.002 | .902 | −0.235 | 0.027 |
| Renal failure | 0.993 | .001 | 0.396 | 1.590 |
| Dialysis | 1.008 | <.001 | 0.762 | 1.255 |
| Disseminated cancer | 1.003 | <.001 | 0.792 | 1.215 |
| Wound infection | 0.786 | <.001 | 0.604 | 1.006 |
| Steroid use | 0.214 | <.001 | 0.155 | 0.274 |
| Weight loss | 0.264 | .042 | 0.010 | 0.520 |
| Bleeding disorder | 0.411 | <.001 | 0.332 | 0.491 |
| ASA class | 0.248 | <.001 | 0.226 | 0.269 |
| Wound class | 0.321 | <.001 | 0.213 | 0.428 |
| Perioperative | ||||
| Operative time | 0.005 | <.001 | 0.004 | 0.005 |
| Anesthesia: spinal | −0.108 | <.001 | −0.133 | −0.082 |
| Anesthesia: other | −0.301 | <.001 | −0.336 | −0.267 |
COPD, chronic obstructive pulmonary disease; CHF, congestive heart failure.
Bold values are statistically significant.