|
| Total | (PD+) n (%) | (PD−) n (%) | p |
| Bishop score | 102 | 69 (67.6) | 33 (32.3) | 0.000 |
| ≥7 | 154 | 29 (18.8) | 125 (81.2) |
|
| <7 |
|
|
|
|
| Cervical dilatation | 98 | 58 (59.2) | 40 (40.8) | 0.012 × 10−4 |
| ≥2 cm | 158 | 40 (25.3) | 118 (74.7) |
|
| <2 cm |
|
|
|
|
| Cervical obliteration | 216 | 84 (38.9) | 132 (61.1) | 0.642 |
| ≥50% (short neck and/or obliterated) | 40 | 14 (35.0) | 26 (65.0) |
|
| <50% (long neck and/or mid-long) |
|
|
|
|
| Ultrasound cervical length (mm) |
|
|
|
|
| <25 | 191 | 86 (45.0) | 105 (55.0) | 0.014 × 10−2 |
| ≥25 | 65 | 12 (18.5) | 53 (81.5) |
|
| Sacculation of membranes |
|
|
|
|
| Yes | 95 | 68 (71.6) | 27 (28.4) | 0.000 |
| No | 161 | 30 (18.6) | 131 (81.4) |
|
| Total | 256 | 98 | 158 |
|