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Comparison between groups on operative time, blood loss and resection length.
| Groups | Operation time (min) | Blood loss (ml) | Resection length (cm) |
|---|---|---|---|
| Control | 135.6±32.7 | 689.3±123.4 | 13.5±4.8 |
| Observation | 144.8±45.2 | 647.8±137.8 | 12.6±4.4 |
| t | 0.456 | 4.529 | 4.659 |
| P-value | 0.685 | 0.037 | 0.034 |
