Table 5.
Preoperative laboratory value association with unplanned readmission via univariate analysis. Statistical analysis was performed using logistic regression and Fisher’s exact test.
| Parameter (% w/lab value)† | Unplanned Readmission, n (%) | No Unplanned Readmission, n (%) | Crude OR‡ | 95% CI | P |
|---|---|---|---|---|---|
| Hypoalbuminemia (19.7) | 51 (4.6) | 320 (3.7) | 1.276 | 0.943–1.726 | 0.130 |
| Hyponatremia (58.0) | 42 (3.8) | 280 (3.2) | 1.196 | 0.859–1.665 | 0.281 |
| Hypernatremia (58.0) | 17 (1.5) | 114 (1.3) | 1.185 | 0.709–1.980 | 0.486 |
| Elevated WBC (67.4) | 78 (7.1) | 496 (5.7) | 1.265 | 0.988–1.620 | 0.066 |
| Thrombocytopenia (67.0) | 57 (5.2) | 398 (4.6) | 1.142 | 0.859–1.519 | 0.361 |
| Elevated AST (18.1) | 14 (1.3) | 115 (1.3) | 0.964 | 0.552–1.685 | 1.000 |
| Elevated BUN (55.2) | 5 (0.5) | 51 (0.6) | 0.776 | 0.309–1.948 | 0.831 |
| Abnormal PT (36.4) | 53 (4.8) | 370 (4.3) | 1.142 | 0.850–1.534 | 0.386 |
| Abnormal PTT (37.5) | 65 (5.9) | 516 (5.9) | 0.998 | 0.765–1.302 | 1.000 |
| Anemia (68.2) | 89 (8.1) | 618 (7.1) | 1.154 | 0.915–1.454 | 0.239 |
WBC = white blood cell, AST = aspartate transaminase, BUN = blood urea nitrogen, PT = prothrombin time, PTT = partial thromboplastin time.
†
Not all patients have listed preoperative lab measurements recorded; percentage is % of total patient cohort with preoperative lab measurements, normal or abnormal.
‡
Unadjusted odds ratio is in reference to null state; i.e., in relation to cases in which the given lab value is normal.