The authors added that these associations were stronger in a subset with gestational age based on ultrasound measurements, with a gestational age of 37 weeks associated with a 3.7 times higher risk of CP; and 42 weeks, a 2.4 times higher risk.
"Clinicians typically regard term births (37-41 weeks) as low risk, with the possibility of increased risk with postterm delivery.
Weeks 37 and 38 seem more to resemble weeks 42 and 43, both in CP risk and in the general likelihood of delivery, leaving 39 to 41 weeks as the optimum time for delivery," researchers wrote.
The findings were published in the journal JAMA.
Source-ANI