Table 1 Baseline criteria comparing uncomplicated and difficult fetal extraction
baseline criteria | group 1: | group 2: | p-value | |
|---|---|---|---|---|
mean ± SD / n (%) | uncomplicated (n = 492) | difficult (n = 137) | ||
obstetrical | gestational age (in weeks) | 39.8 ± 1.1 | 39.64 ± 1.1 | 0.03 |
full cervical dilation (10 cm) | 310 (63.0) | 103 (75.2) | 0.008* | |
cephalic malpresentation | 260 (52.9) | 91 (66.4) | 0.005* | |
maternal | age (in years) | 31.7 ± 5.0 | 31.6 ± 5.1 | 0.934 |
BMI before pregnancy (in kg/m2) | 22.8 ± 4.0 | 23.5 ± 4.7 | 0.075 | |
neonatal | weight (in g) | 3555.9 ± 450.8 | 3453.2 ± 420.9 | 0.02 |
head circumference > 35 cm | 267 (54.3) | 53 (38.7) | 0.001* |