You are viewing the site in preview mode

Skip to main content

Advertisement

Table 1 Baseline Characteristics of Study Population

From: Derivation and validation of a model predicting the likelihood of vaginal birth following labour induction

  Characteristic Cohort (N = 1123)* Missing (%)
Maternal Characteristics Maternal Age (in years) 33.9 ± 4.8 0
Height (in centimeters) 164.8 ± 7.2 3.1
Weight (pre-pregnancy) (kilograms) 67.6 ± 17.8 4.9
Body Mass Index (pre-pregnancy) (kg/m2) 24.9 ± 6.1 6.2
Weight (at-delivery) (kilograms) 82.4 ± 18.6 4.3
Body Mass Index (at-delivery) (kg/m2) 30.4 ± 6.3 5.8
Weight Gain (kilograms) 14.7 ± 6.5 7.5
Obstetrical History Nulliparous n (%) 703 (62.6) 0
Primigravida n (%) 504 (44.9) 0
Cervical Examination Dilation (centimeters) median and interquartile range 1.7 ± 1.32 8.4
Consistency n (%)   49.2
 Firm 24 (4.2)  
 Medium 48 (8.4)  
 Soft 498 (87.4)  
Position n (%)   47.2
 Anterior 148 (25)  
 Mid 88 (14.8)  
 Posterior 357 (60.2)  
Effacement n (%)   22.7
 0–29% 181 (20.8)  
 30–49% 74 (8.5)  
 50–69% 340 (39.2)  
  > 70% 273 (31.5)  
Fetal Station n (%)   46.7
 -3 233 (39.0)  
 -2 321 (53.7)  
 -1 36 (6.0)  
 0 8 (1.3)  
Labour Characteristics Indication for Induction   0
 Fetal n (%) 272 (24.2)  
 Maternal Indication for Induction n (%) 537 (47.8)  
 Social/Geographical/Other n (%) 314 (28.0)  
Primary Method of Induction n (%)   0
 Artificial rupture of membranes 334 (29.7)  
 Cervidil 42 (3.7)  
 Foley Catheter 139 (12.4)  
 Oxytocin 215 (19.1)  
 Prostaglandin Gel/Tablet 393 (35.0)  
Gestational Age 39.4 ± 1.4 0
Mode of Delivery n (%)   0
 Cesarean Delivery 290 (25.8)  
 Vaginal 833 (74.2)  
  1. *Mean ± Standard Deviation (SD) unless otherwise noted
  2. Includes abnormal placentation, fetal anomaly, intrauterine growth restriction, abnormal non-stress test, abnormal Doppler/ Biophysical Profile findings, reduced fetal movement at term, oligohydramnios, other evidence of fetus in distress that requires early delivery
  3. Includes advanced maternal age, deterioration of maternal medical condition, gestational or pre-gestational diabetes mellitus, obstetric cholestasis, preeclampsia, pregnancy induced hypertension, post-dates, premature rupture of membranes (preterm and term), raised body mass index, therapeutic low molecular weight heparin