AAFP and ACOG recommend that non–medically indicated (elective) inductions of labor or C-sections should be scheduled after what 39 weeks, 0 days gestational age.
Delivery prior to 39 weeks, 0 days is associated with an increased risk of learning disabilities and may increase morbidity and mortality.
Further Reading / Reference
Elimination of non-medically indicated (elective) deliveries before 39 weeks gestational age. California: March of Dimes; 2010.
Cesarean delivery: Counseling issues and complication management. Am Fam Physician 2015;91(3):178-184