Study factors:
Changes in caesarean delivery rates were compared with respect to the
following study factors: parity, previous caesarean delivery, maternal
age, maternal BMI, plurality, fetal malpresentation, and preterm birth
< 37 completed weeks’ gestational age. We also accounted for
changes in planned (elective/pre-labour) caesarean delivery for maternal
choice alone, suspected fetal compromise, previous pregnancy issues
(such as anal sphincter injury, pelvic floor trauma, or difficult birth)
and suspected large fetus, because we previously found these indications
for caesarean delivery increased over time.9 Finally,
changes in caesarean delivery rates were described by Robson
group.13