Table 1.
Patient Characteristics
| Variables | Outcomes (N) | p-value | ||
|---|---|---|---|---|
| Term (N=117) | Preterm (N=43) | Total (N=160) | ||
| Age (mean, SD) | 28.8 (5.7) | 30.1 (6.9) | 29.1 (6.1) | 0.219 |
| Hospital | 0.528 | |||
| - SNH (%) | 90 (76.9) | 31 (72.1) | 121 (75.6) | |
| - UDH (%) | 27 (23.1) | 12 (27.9) | 39 (24.4) | |
| UCA (median, IQR) | 113.4 (105.9,120.9) | 113.3 (97.8,124) | 113.4 (104.9,122) | 0.929 |
| GA at TVU (median, IQR) | 35+1 (33+2,36+3) | 34+0 (32+0,34+5) | 35+0 (33+0,36+3) | |
| CL (median, IQR) | 3.4 (2.6,4) | 3 (2.5,3.5) | 3.2 (2.5,3.9) | 0.032* |
| BMI at conception (median, IQR) | 20.3 (18.4,22.9) | 21 (18.9,23.6) | 20.4 (18.4,23) | 0.409 |
| BMI at delivery (median, IQR) | 24.5 (22.8,27.7) | 24.7 (22.5,27.5) | 24.6 (22.8,27.7) | 0.873 |
| Parity | 0.491 | |||
| - Nulliparous (%) | 67 (57.3) | 22 (51.2) | 89 (55.6) | |
| Prior spontaneous preterm | 8 (6.8) | 4 (9.3) | 12 (7.5) | 0.735 |
| Prior dilatation and curettage (D&C) | 9 (7.7) | 2 (4.7) | 11 (6.9) | 0.729 |
| Prior cervical conization | 0 (0) | 1 (2.3) | 1 (0.6) | 0.269 |
| Prior LEEP | 0 (0) | 0 (0) | 0 (0) | |
| Abnormal Pap | 2 (1.7) | 0 (0) | 2 (1.2) | > 0.999 |
| Smoking | 1 (0.9) | 1 (2.3) | 2 (1.2) | 0.467 |
| Gestational diabetes mellitus | 16 (13.7) | 6 (14) | 22 (13.8) | 0.964 |
| Hypertension | 5 (4.3) | 2 (4.7) | 7 (4.4) | > 0.999 |
| Route of delivery | 0.748 | |||
| - Normal labor (%) | 82 (70.1) | 29 (67.4) | 111 (69.4) | |
| - Cesarean section (%) | 35 (29.9) | 14 (32.6) | 49 (30.6) | |
| Cesarean section | 0.515 | |||
| - Primary (%) | 24 (66.7) | 7 (50) | 31 (62) | |
| - Repeated (%) | 11 (30.6) | 7 (50) | 18 (36) | |
Note: *Statistically significant at an alpha level of 0.05.