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Swallowing pain score
| Days after surgery (d) | Control | Experiment | T | P value |
| 1 | 8 ± 1.6 | 6.9 ± 2.0 | 4.27 | < 0.05 |
| 2 | 7.1 ± 1.4 | 6.1 ± 1.9 | 4.90 | < 0.05 |
| 3 | 5.5 ± 1.9 | 4.8 ± 1.6 | 3.67 | < 0.05 |
| 4 | 4.5 ± 2.1 | 3.2 ± 1.4 | 5.64 | < 0.05 |
| 5 | 3.6 ± 1.8 | 2.6 ± 1.4 | 4.26 | < 0.05 |
| 6 | 3.4 ± 1.4 | 2 ± 1.3 | 7.29 | < 0.05 |
