Table 2.
Intraoperative data and postoperative outcomes before and after propensity score matching
| Variables | Before matching | After matching | ||||
|---|---|---|---|---|---|---|
| LMH (N = 36) | OMH (N = 67) | p value | LMH (N = 32) | OMH (N = 32) | p value | |
| Surgical data | ||||||
| Operative time (min) | 255 (110–500) | 210 (155–255) | <0.001 | 255 (110–460) | 200 (165–245) | <0.001 |
| Blood loss (mL) | 300 (50–1000) | 400 (50–2000) | 0.016 | 300 (50–1000) | 325 (50–2000) | 0.186 |
| Pringle time (min) | 50 (20–150) | 30 (15–80) | <0.001 | 50 (20–100) | 30 (15–60) | <0.001 |
| Blood transfusion | 2 (5.6) | 13 (19.4) | 0.057 | 1 (3.1) | 3 (9.4) | 0.606 |
| Postoperative outcomes | ||||||
| Hospital stay (days) | 8 (4–22) | 9 (5–23) | 0.017 | 7.5 (4–22) | 9 (5–17) | 0.060 |
| Overall complications | 11 (30.6) | 36 (53.7) | 0.024 | 10 (31.3) | 12 (37.5) | 0.599 |
| Major complications | 0 (0) | 12 (17.9) | 0.017 | 0 (0) | 5 (15.6) | 0.062 |
| Liver-specific complications | 10 (27.8) | 36 (53.7) | 0.012 | 9 (28.1) | 11 (34.4) | 0.590 |
| Liver failure | 8 (22.2) | 14 (20.9) | 0.876 | 7 (21.9) | 5 (15.6) | 0.522 |
| Hemorrhage | 1 (2.8) | 3 (4.5) | 1.000 | 1 (3.1) | 0 (0) | 1.000 |
| Ascites | 4 (11.1) | 25 (37.3) | 0.005 | 3 (9.4) | 10 (31.3) | 0.030 |
| Biliary leakage | 0 (0) | 6 (9.0) | 0.159 | 0 (0) | 1 (3.1) | 1.000 |
| General complication | 2 (5.6) | 13 (19.4) | 0.057 | 2 (6.3) | 6 (18.8) | 0.257 |
| Respiratory infection | 1 (2.8) | 9 (13.4) | 0.164 | 1 (3.1) | 4 (12.5) | 0.352 |
| Wound infection | 1 (2.8) | 6 (9.0) | 0.437 | 1 (3.1) | 2 (6.3) | 1.000 |
| Pleural effusion | 1 (2.8) | 9 (13.4) | 0.164 | 1 (3.1) | 5 (15.6) | 0.198 |
| Cost (dollars) | 7497.1 (4565.1–11,252.2) | 5471.9 (2095.8–9966.8) | <0.001 | 7311.0 (4565.1–11,232.3) | 5496.6 (2815.4–9966.8) | <0.001 |
| 90-day mortality | 0 (0) | 1 (1.5) | 1.000 | 0 (0) | 1 (3.1) | 1.000 |