Table 2.
Tumor characteristics and operative outcomes before and after PSM
| Before propensity score matching | After propensity score matching | |||||
|---|---|---|---|---|---|---|
| LRH (n = 48) | ORH (n = 31) | P-value | LRH (n = 17) | ORH (n = 17) | P-value | |
| Tumor size (cm) | 2.3 ± 1.0 | 4.2 ± 2.7 | < 0.01 | 2.9 ± 0.9 | 2.8 ± 1.4 | 0.79 |
| Number of tumors | 0.13 | 0.67 | ||||
| Single | 42 (87.5) | 23 (74.2) | 14 (82.4) | 13 (76.5) | ||
| Multiple | 6 (12.5) | 8 (25.8) | 3 (17.6) | 4 (23.5) | ||
| Location (Couinaud section) | 0.70 | 0.23 | ||||
| Segments II, III, IV, V, VI | 32 (66.7) | 18 (58.1) | 11 (64.7) | 6 (35.3) | ||
| Segments VII, VIII, I | 12 (25.0) | 9 (29.0) | 5 (29.4) | 9 (52.9) | ||
| Bilober | 4 (8.3) | 4 (12.9) | 1 (5.9) | 2 (11.8) | ||
| Pathological diagnosis | - | - | ||||
| HCC | 36 (75.0) | 26 (83.9) | 13 (76.5) | 14 (82.4) | ||
| ICC | 3 (6.3) | 2 (6.5) | 1 (5.9) | 1 (5.9) | ||
| CRLM | 8 (16.6) | 2 (6.5) | 3 (17.6) | 2 (11.8) | ||
| Hepatic benign tumor | 1 (2.1) | 1 (3.2) | 0 | 0 | ||
PSM propensity score matching, LRH laparoscopic repeat hepatectomy, ORH open repeat hepatectomy, HCC hepatocellular carcinoma, ICC intrahepatic cholangiocarcinoma, CRLM colorectal liver metastases