| Group | N | Showed effective | Effective | Ineffective | Total response rate/% |
| Control group | 40 | 8 | 22 | 10 | 75.00 |
| Treatment group | 40 | 20 | 18 | 2 | 95.00 |
| X2 |
|
|
|
| 8.193 |
| P |
|
|
|
| 0.002 |