PD | 观察组(n = 30) | 对照组(n = 29) | P值 |
PD0 (cm) | 1.84 ± 0.31 | 1.86 ± 0.35 | 0.134 |
PD1 (cm) | 1.78 ± 0.23 | 1.70 ± 0.19 | 0.023 |
PD2 (cm) | 1.75 ± 0.22 | 1.65 ± 0.19 | 0.035 |
PD3 (cm) | 1.87 ± 0.30 | 1.78 ± 0.26 | 0.011 |