|
| n | 显著 | 有效 | 无效 | 总有效率 |
| 观察组 | 160 | 89 (55.63) | 50 (31.25) | 21 (13.12) | 139 (86.88) |
| 对照组 | 160 | 62 (38.75) | 33 (20.63) | 65 (40.62) | 95 (59.38) |
| X2 |
|
|
|
| 30.79 |
| P |
|
|
|
| 0.00 |