Table 2.

Gestational age-specific mortality rates according to maternal age

Age		Conventional mortality ratea				Fetuses-at-risk mortality rateb
	Total births	Stillbirth	Neonatal			Stillbirth	Neonatal
			Early	Late	Post		Early	Late	Post
Maternal age-by-gestational weekc
<20 years
22–24	598	456.52	723.08	188.89	136.99	1.37	1.18	0.09	0.05
25–27	688	171.51	208.77	62.08	75.65	0.60	0.60	0.14	0.16
28–31	1 637	98.35	48.78	9.26	16.53	0.82	0.36	0.07	0.12
32–36	12 849	19.07	7.14	2.16	10.33	1.25	0.46	0.14	0.66
≥37	182 945	1.94	0.81	0.53	3.41	1.94	0.81	0.53	3.41
25–29 years
22–24	1 788	454.70	699.49	150.17	116.47	0.77	0.64	0.04	0.03
25–27	2 048	197.75	157.64	49.86	57.79	0.38	0.24	0.07	0.07
28–31	4 954	108.40	42.79	10.64	12.67	0.51	0.18	0.04	0.05
32–36	53 233	17.34	6.65	1.85	4.15	0.88	0.33	0.09	0.21
≥37	999 069	1.39	0.64	0.29	1.08	1.39	0.64	0.29	1.08
≥35 years
22–24	1 015	435.47	664.92	187.50	108.97	1.11	0.96	0.09	0.03
25–27	1 121	224.80	124.28	60.45	44.76	0.63	0.27	0.12	0.08
28–31	2 595	110.98	39.45	10.38	10.94	0.73	0.23	0.06	0.06
32–36	24 173	21.47	7.95	2.22	3.72	1.32	0.48	0.13	0.22
≥37	369 880	2.15	0.76	0.31	0.98	2.15	0.76	0.31	0.98

^aPer 1000 total births or infant survivors.

^bPer 1000 fetuses-at-risk.

^cNot all age categories are shown, to conserve space.