Table 2.
Comparison of clinical data between Preterm birth and full-term group in PROM population
| Clinical data | Preterm birth group (n=43) | Full-term group (n=57) | t/χ2 | P |
|---|---|---|---|---|
| Age | 36.2±6.1 | 32.9±4.3 | 4.847 | 0.021 |
| BMI before pregnancy | 25.2±5.8 | 23.8±7.2 | 2.078 | 0.232 |
| Multipara | 3 (7.0%) | 7 (12.3%) | 0.026 | 0.081 |
| Assisted reproduction and pregnancy | 7 (16.3%) | 4 (7.0%) | 0.570 | 0.650 |
| CL | 22.2±3.2 | 29.0±4.2 | 4.855 | 0.033 |
| Operation mode | 6.22 | 0.023 | ||
| LEEP | 4 (9.3%) | 26 (45.6%) | ||
| CKC | 40 (93.0%) | 29 (50.9%) | ||
| Cervical canceration | 4.036 | 0.079 | ||
| CIN1 | 4 (9.3%) | 11 (19.3%) | ||
| CIN2 | 13 (30.2%) | 27 (47.4%) | ||
| CIN3 | 26 (60.5%) | 19 (33.3%) | ||
| Time after conization | 8.315 | 0.002 | ||
| 6-12 months | 20 (46.5%) | 6 (10.5%) | ||
| 12-24 months | 13 (30.2%) | 24 (42.1%) | ||
| >24 months | 10 (23.3%) | 27 (47.4%) |
Note: CL: cervical length; LEEP: Loop Electrosurgical Excision Procedure; CKC: Cold Knife Conization; PROM: premature rupture of membrane.