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A large systematic review and meta-analysis of published relative clinical studies in over 600,000 pregnant women has clearly demonstrated that elective induction of labor at 39 weeks reduces the need for caesarean deliveries, reduces peripartum infections, reduces neonatal respiratory morbidity, reduces neonatal Intensive Care Unit admission, reduces perinatal mortality.
It is no longer advisable to wait for spontaneous labour at 40, 41, or 42 weeks of gestation, as it is significantly more dangerous for both mother and child.
References https://www.ajog.org/article/S0002-9378(19)30425-9/fulltext https://journals.lww.com/greenjournal/Abstract/2019/04000/Neonatal_and_M...