Variable | NVD (n = 97) | C.S (n = 53) | t-test | P value |
Cervical length (mm): | ||||
Mean ± SD | 31.8 ± 2.7 | 34.2 ± 2.7 | 5.14 | <0.001 (HS) |
Uterocervical angle (˚): | ||||
Mean ± SD | 116.3 ± 7.6 | 103.5 ± 10.8 | 8.42 | <0.001 (HS) |