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Differences in cervical length by ultrasound method in the complete study group and stratified by short cervix as determined transvaginally.
| Ultrasound Method | All studied Population mm, mean (SD) | Cervical Length mean (SD) | |
|---|---|---|---|
| <25mm | >25mm | ||
| Transabdominal | 34.57 (7.1) | 26.6 (9.2) | 35.2 (6.4) |
| Transvaginal | 34.81 (6.9) | 20.1 (3.8) | 36.4 (5.2) |
| Significance | p=0.61 | p<0.001 | p<0.01 |
SD = standard deviation
