Table 2.
Gestation characteristics, pregnancy and neonatal outcomes
| Characteristics | Term pregnancies (n = 170) | Preterm pregnancies (n = 46) | p value |
|---|---|---|---|
| Gestational age in weeks+day | |||
| At enrolment (mean ± SD, range)1 | 13+ 2 ± 1+1 (11+1–16+6) | 13+3 ± 1+0 (11+6–16+0) | 0.641 |
| At delivery (mean ± SD, range) 1 | 39+3 ± 0+6 (39+3–41+2) | 34+2 ± 2+6 (20+0–36+6) | < 0.0001 |
| Late preterm (32 to 36+6) | NA | 39 (84.8%) | |
| Very preterm (28 to 31+6) | NA | 5 (10.8%) | |
| Extremely early (≤ 27+6) | NA | 1 (2.1%) | |
| Previous pregnancy history (excludes women in first pregnancy)2 | (n = 125) | (n = 24) | < 0.0001 |
| Livebirth, term | 89 (71.2%) | 9 (37.5%) | |
| Livebirth, preterm | 0 (0%) | 3 (12.5%) | < 0.0001 |
| Spontaneous abortion | 20 (16%) | 8 (33.3%) | 0.046 |
| Pregnancy termination | 16 (12.8%) | 3 (12.5%) | 0.968 |
| Ectopic pregnancy | 0 (0%) | 1 (4.1%) | |
| Mode of delivery2 | 0.042 | ||
| Vaginal delivery | 128 (75.3%) | 27 (58.7%) | |
| C-section | 42 (24.7%) | 18 (39.1%) | |
| Parity2 | 0.005 | ||
| 0 | 55 (32.3%) | 28 (60.8%) | |
| 1 | 94 (55.3%) | 12 (26%) | |
| 2–4 | 21 (12.3%) | 6 (13%) | |
| Assisted conception2 | 17 (10%) | 6 (13%) | 0.591 |
| Fetal sex (% male/% female) 2 | (48.8%)/(51.1%) | (41.3%)/(56.5%) | 0.430 |
| Birth weight (g) (mean ± SD, range)1 | 3398 ± 459 (1970–5200) | 2550 ± 559 (1300–3595) | < 0.0001 |
| Infant in NICU (n, %)2 | 1 (0.6%) | 24 (52.2%) | < 0.0001 |
1t test; 2chi-square