Table 5.
Variables | Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|
Odds ratio (95% CI) | P | Adjusted odds ratio (95% CI) | P | |
Maternal height | 0.907 (.864‐.952) | <0.001 | 0.894 (0.845‐0.946) | <0.001 |
BMI ≥30 kg/m2 | 2.257 (1.353‐3.767) | 0.002 | — | — |
Multiparous | 0.129 (.063‐.265) | <0.001 | 0.102 (0.048‐0.22) | <0.001 |
EFW | 1.001 (1.000‐1.001) | 0.023 | — | — |
Bishop score | 0.605 (.515‐.71) | <0.001 | — | — |
Cervical length | 1.916 (1.451‐2.530) | <0.001 | 1.717 (1.183‐2.492) | 0.004 |
Angle of progression | 0.953 (.931‐.974) | <0.001 | — | — |
Inner cervical SWE | 1.43 (1.214‐1.684) | <0.001 | 1.338 (1.077‐1.663) | 0.009 |
Binary logistic regression was performed.
Equation 1: Loge (odds) = 13.686 – 2.279*parity (0 for nulliparous, 1 for multiparous)‐ 0.112*mat height + 0.541*cervical length + 0.291* inner cervical SWE.
Abbreviations: BMI, body mass index; EFW, estimated fetal weight; inner cervical SWE, mean of shear wave elasticity of anterior and posterior inner cervix.