| 组别 | 例数 | 显效 | 有效 | 较差 | 总有效率 |
| A组 | 30 | 18 (60%) | 11 (37%) | 1 (3%) | 97% |
| B组 | 30 | 7 (23%) | 18 (60%) | 5 (17%) | 83% |
| χ2 |
|
|
|
| 3.926 |
| p |
|
|
|
| <0.05 |