Table 1.
Continuous Preoperative Risk Factors
| Continuous Factor | Laparoscopy | Open | P |
|---|---|---|---|
| Age (years) | 66.4 (12.8) | 66.7 (13.4) | .678 |
| BMI (kg/m2) | 28.3 (6.6) | 26.6 (6.1) | <.0001 |
| Height (meters) | 1.7 (0.1) | 1.7 (0.1) | .082 |
| Comorbidities | 1.6 (1.2) | 1.8 (1.3) | .001 |
| Sodium | 139.5 (2.9) | 139.4 (2.9) | .382 |
| BUN | 16.5 (7.1) | 16.1 (8.0) | .313 |
| Creatinine | 1.0 (0.6) | 1.0 (0.6) | .616 |
| Albumin | 3.9 (0.5) | 3.7 (0.7) | <.0001 |
| Total bilirubin | 0.6 (0.4) | 0.6 (0.7) | .201 |
| AST | 25.9 (14.3) | 25.7 (19.3) | .821 |
| Alkaline phosphatase | 79.8 (46.0) | 82.2 (44.0) | .405 |
| WBC | 6.7 (2.2) | 7.0 (2.9) | .014 |
| Hematocrit | 37.7 (5.0) | 36.0 (5.5) | <.0001 |
| Platelet count | 245.1 (80.6) | 257.5 (98.7) | .006 |
| PTT | 29.4 (5.6) | 29.5 (5.6) | .692 |
| INR | 1.0 (0.2) | 1.1 (0.3) | .187 |
| PT | 12.7 (2.9) | 12.5 (2.4) | .496 |
Data are expressed as the mean (SD), unless another unit is shown. Bold indicates a statistically significant difference between study groups. AST aspartate aminotransferase; BMI, body mass index; BUN, blood urea nitrogen; PT, prothrombin time; PTT, partial thromboplastin time; WBC, white blood cell (count).