| 组别 | n | 头晕 | 咳嗽 | 总发生率 |
| 对照组 | 60 | 5 (8.33%) | 7 (11.67%) | 12 (20.00%) |
| 观察组 | 60 | 2 (3.33%) | 2 (3.33%) | 4 (6.67%) |
| X² |
|
|
| 4.615 |
| P |
|
|
| 0.032 |