| 组别 | 例数 | 正常 | 轻度异常 | 重度异常 |
| 脑损伤组 | 32 | 6 (18.75) | 15 (46.88) | 11 (34.38) |
| 非脑损伤组 | 65 | 32 (49.23) | 28 (43.08) | 5 (7.69) |
| Z |
| 3.611 | ||
| P |
| 0.000 | ||