Table 3.
Comparison of overall survival between the difficult and control groups
| Group | Number of patients |
Overall survival (%)1 |
|||
| 1-yr | 3-yr | 5-yr | 7-yr | ||
| Control | 88 | 92.5 | 60.3 | 43.2 | 32.8 |
| Difficult | 382 | 84.3 | 54.4 | 41.2 | 29.9 |
| Near large vessels or bile ducts | 87 | 86.3 | 41.4 | 38.0 | 33.8 |
| Near peripheral structures | 232 | 82.8 | 56.9 | 42.9 | 28.8 |
| Under liver capsule | 63 | 90.2 | 69.2 | 40.1 | 30.1 |
| Total | 470 | 85.8 | 56.8 | 41.6 | 30.4 |
1
There was no significant difference in long term survival between the difficult and control groups (P = 0.371).