TABLE 2

Neonatal and Infant Mortality Rates for Singleton Births 34 to 41 Weeks of Gestation

GA, wkTotalNeonatal Mortality: Neonatal Deaths per 1000 BirthsInfant Mortality: Infant Deaths per 1000 Births
CountRateRR (95% CI)CountRateRR (95% CI)
3450 7173597.19.5 (8.4–10.8)a59911.85.4 (4.9–5.9)a
3585 2184054.86.4 (5.6–7.2)a7328.63.9 (3.6–4.3)a
36156 6924372.83.7 (3.3–4.2)a8905.72.6 (2.4–2.8)a
37320 1695461.72.3 (2.1–2.6)a13234.11.9 (1.8–2.0)a
38674 8927001.01.4 (1.3–1.5)a18422.71.2 (1.2–1.3)a
39966 2817210.81.00 (reference)21182.21.00 (reference)
40821 9346250.81.0 (0.9–1.1)17042.10.9 (0.9–1.0)
41407 5933260.81.1 (0.9–1.2)8882.21.1 (1.0–1.1)
  • GA indicates gestational age; RR, relative risk; CI, confidence interval

  • a P < .001 when compared with the reference group of 39-week deliveries.