|
| Study group N = 45 | Control group N = 45 | P | |
| Age (years) | 23.44 ± 2.81 | 23.64 ± 2.90 | 0.740 | |
| BMI (wt/m2) | 25.10 ± 2.87 | 25.34 ± 2.99 | 0.709 | |
| Cervical length (mm) | 26.28 ± 3.92 | 25.75 ± 3.92 | 0.518 | |
| Previous preterm delivery | 1.00 | 26 (57.7%) | 27 (60.0%) | 0.89 |
| 2.00 | 16 (35.6%) | 16 (35.6%) | ||
| 3.00 | 3 (6.7%) | 2 (4.4%) | ||
| Previous miscarriage | 5 (11.1%) | 6 (13.3%) | 0.74 | |
| Cervical length | <25 mm | 20 (44.4%) | 21 (46.7%) | 0.83 |
| >25 mm | 25 (55.6%) | 24 (53.3%) | ||