Sonographic cervical characteristics
| Characteristic | Study cohort (n=165) |
| Baseline cervical length (mm) | 29.7±7.6 |
| Baseline cervical volume (cm3) | 15.3±8.4 |
| Excised length (%) | 43.5±17.3 |
| Excised volume (%) | 20.2±16.8 |
| Cervical length at 6 months (mm) | 28.4±7.6 |
| Cervical volume at 6 months (cm3) | 14.9±8.3 |
| Length regeneration (%) | 89.5±6.3 |
| Volume regeneration (%) | 86.3±13.2 |
Data are mean±SD as appropriate.