. Author manuscript; available in PMC: 2010 Jan 5.

Published in final edited form as: Pediatrics. 2009 Jul;124(1):234–240. doi: 10.1542/peds.2008-3232

TABLE 2.

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

GA, wk	Total	Neonatal Mortality: Neonatal Deaths per 1000 Births			Infant Mortality: Infant Deaths per 1000 Births
		Count	Rate	RR (95% CI)	Count	Rate	RR (95% CI)
34	50 717	359	7.1	9.5 (8.4–10.8)^a	599	11.8	5.4 (4.9–5.9)^a
35	85 218	405	4.8	6.4 (5.6–7.2)^a	732	8.6	3.9 (3.6–4.3)^a
36	156 692	437	2.8	3.7 (3.3–4.2)^a	890	5.7	2.6 (2.4–2.8)^a
37	320 169	546	1.7	2.3 (2.1–2.6)^a	1323	4.1	1.9 (1.8–2.0)^a
38	674 892	700	1.0	1.4 (1.3–1.5)^a	1842	2.7	1.2 (1.2–1.3)^a
39	966 281	721	0.8	1.00 (reference)	2118	2.2	1.00 (reference)
40	821 934	625	0.8	1.0 (0.9–1.1)	1704	2.1	0.9 (0.9–1.0)
41	407 593	326	0.8	1.1 (0.9–1.2)	888	2.2	1.1 (1.0–1.1)

GA indicates gestational age; RR, relative risk; CI, confidence interval

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