| Variables | Findings | |
| Maternal age (years) | ≤20, n (%) | 1 (2.7%) |
| 21 - 25, n (%) | 8 (21.6%) | |
| 26 - 30, n (%) | 16 (43.3%) | |
| 31 - 35, n (%) | 7 (18.9%) | |
| >35, n (%) | 5 (13.5%) | |
| Mean (±SD) | 28.5 ± 6.4 | |
| Body mass index (kg/m2) | <25, n (%) | 3 (8.2%) |
| 25 - 30, n (%) | 18 (48.6%) | |
| >30, n (%) | 16 (43.2%) | |
| Mean (±SD) | 29.6 ± 5.5 | |
| Gravidity | G1, n (%) | 15 (40.5%) |
| G2, n (%) | 12 (32.5%) | |
| G3, n (%) | 10 (27%) | |
| Parity | Nullipara, n (%) | 21 (56.8%) |
| Para-1, n (%) | 11 (29.7%) | |
| Para-2, n (%) | 5 (13.5%) | |
| Gestational age at inclusion (weeks) | 24, n (%) | 7 (18.9%) |
| >24 - 28, n (%) | 27 (73%) | |
| >28, n (%) | 3 (8.1%) | |
| Mean (±SD) | 26.1 ± 4.6 | |