组别 | <0.3 | 0.3~0.8 | >0.8 |
对照组(n = 50) | 5 (10.0) | 23 (46.0) | 22 (44.0) |
观察组(n = 50) | 4 (8.0) | 12 (24.0) | 34 (68.0) |
X2 | 0.37 | 8.264 | 8.761 |
P | >0.05 | <0.05 | <0.05 |