Normal cytology group N=42,398 | Treated, cone-length <6 mm N=212 | Treated, cone-length 6–9 mm N=1219 | Treated, cone-length 10 mm N=374 | |||||||
---|---|---|---|---|---|---|---|---|---|---|
N (%) | N (%) | aORa | p | N (%) | aORa | p | N (%) | aORa | p | |
PTD, <37 weeks | 1794 (4.2) | 16 (7.5) | 1.72 (1.03–2.89) | 0.038 | 77 (6.3) | 1.47 (1.16–1.87) | 0.002 | 26 (7.0) | 1.57 (1.05–2.36) | 0.028 |
Spontaneous PTD | 1264 (3.0) | 12 (5.7) | 1.83 (1.02–3.31) | 0.044 | 61 (5.0) | 1.68 (1.29–2.20) | <0.001 | 20 (5.3) | 1.75 (1.11–2.76) | 0.017 |
pPROM | 479 (1.1) | 7 (3.3) | 2.55 (1.19–5.49) | 0.016 | 36 (3.0) | 2.36 (1.66–3.34) | <0.001 | 10 (2.7) | 2.07 (1.09–3.92) | 0.026 |
PROM, delivery at ≥ 37 weeks | 2084 (5.1) | 11 (5.6) | 0.93 (0.50–1.71) | 0.81 | 79 (6.9) | 1.23 (0.97–1.55) | 0.09 | 23 (6.6) | 1.14 (0.74–1.75) | 0.55 |
Chorioamnionitis | 97 (0.2) | 0 | – | – | 4 (0.3) | 1.11 (0.40–3.05) | 0.84 | 3 (0.8) | 2.73 (0.85–8.76) | 0.09 |
Neonatal sepsis | 591 (1.4) | 3 (1.4) | 0.79 (0.25–2.48) | 0.69 | 22 (1.8) | 1.09 (0.71–1.68) | 0.70 | 6 (1.6) | 0.95 (0.42–2.14) | 0.90 |