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Postoperative analgesics and pain scores
| LRR (n = 492) | ORR (n = 424) | χ2 | P value | |
| Analgesic usage | 95.31 | < 0.001 | ||
| No | 299 | 121 | ||
| PCIA | 152 | 273 | ||
| Short-acting drug | 41 | 30 | ||
| Post-op pain degree | 21.43 | < 0.001 | ||
| Mild | 263 | 193 | ||
| Medium | 213 | 186 | ||
| Severe | 16 | 45 |
LRR: Laparoscopy in radical resection; ORR: Open radical resection; PCIA: Patient controlled intravenous analgesia.
