Table 2.
Perioperative bleeding
| Perioperative bleeding | Hemoglobin levels at 6 hours (g/dL) | Hemoglobin fall from preoperative to 6 hours after surgery (g/dL) | Hemoglobin levels at 48 hours after surgery (g/dL) | Hemoglobin fall from preoperative to 48 hours after surgery (g/dL) | Patients transfused | Packed red blood cells transfused per patient | Drainage (mL) |
|---|---|---|---|---|---|---|---|
| MIS Group | 11.33 (1.17) | 2.87 (0.91) | 9.99 (1.02) | 4.19 (1.14) | 12 | 0.38 (0.75) | 389.5 (290.7) |
| Standard Group | 11.17 (1.07) | 2.41 (0.95) | 9.72 (0.90) | 3.86 (1.03) | 13 | 0.44 (0.88) | 193.8 (154.6) |
| Significance (p) | 0.511* | 0.025* 95% CI (−0.86/−0.06) | 0.203* | 0.165* | 0.817 | 0.817† | 0.001† |
Standard deviations in parentheses; *Student’s t-test was applied; †Mann-Whitney U test was used; MIS = minimally invasive surgery; 95% CI = 95% confidence interval.