指标 | 早发型NBM组(n = 27) | 晚发型NBM组(n = 30) | t/Z/χ2 | P值 |
绒毛膜羊膜炎(例) | 7 (25.9%) | 7 (23.3%) | 0.938 | 1.000 |
脐带炎(例) | 7 (25.9%) | 2 (6.7%) | 5.402 | 0.041 |
羊水外观异常(例) | 7 (25.9%) | 3 (10.0%) | 2.946 | - |
胎盘外观异常(例) | 1 (3.7%) | 2 (6.7%) | 0.315 | 1.000 |
脐带外观异常(例) | 10 (37.0%) | 6 (20.0%) | 1.623 | 0.245 |