Table 1.

Stillbirth, neonatal and perinatal mortality rates among women with hypertensive disorders of pregnancy and women without hypertension, USA, 2011–2013

Gestational age (weeks)	Live births	Stillbirths	Neonatal deaths	Fetuses at riska	Traditional (per 1000)			Fetuses at risk (per 1000)
					SBRa per 1000	NMRa per 1000	PMRa per 1000	SBRa per 1000	NMRa per 1000	PMRa per 1000
Women with hypertensive disorders
28	3834	286	162	734 483	69.4	42.3	108.7	0.4	0.2	0.6
29	4589	221	117	730 363	45.9	25.5	70.3	0.3	0.2	0.5
30	6308	282	117	725 553	42.8	18.5	60.5	0.4	0.2	0.5
31	7941	257	102	718 963	31.3	12.8	43.8	0.4	0.1	0.5
32	11 672	306	98	710 765	25.5	8.4	33.7	0.4	0.1	0.6
33	16 003	279	96	698 787	17.1	6.0	23.0	0.4	0.1	0.5
34	25 927	268	127	682 505	10.2	4.9	15.1	0.4	0.2	0.6
35	35 926	327	129	656 310	9.0	3.6	12.6	0.5	0.2	0.7
36	62 343	375	145	620 057	6.0	2.3	8.3	0.6	0.2	0.8
37	123 209	350	162	557 339	2.8	1.3	4.1	0.6	0.3	0.9
38	151 979	321	140	433 780	2.1	0.9	3.0	0.7	0.3	1.1
39	189 058	216	137	281 480	1.1	0.7	1.9	0.8	0.5	1.3
40	75 786	113	48	92 206	1.5	0.6	2.1	1.2	0.5	1.7
41	15 337	26	14	16 307	1.7	0.9	2.6	1.6	0.9	2.5
≥42	937	7	1	944	7.4	1.1	8.5	7.4	1.1	8.5
Total	730 849	3634	1595	734 483	4.9	2.2	7.1	4.9	2.2	7.1
Women without hypertensive disorders
28	15 767	1795	933	11 016 885	102.2	59.2	155.3	0.2	0.1	0.2
29	17 463	1536	757	10 999 323	80.8	43.3	120.7	0.1	0.1	0.2
30	23 444	1667	814	10 980 324	66.4	34.7	98.8	0.2	0.1	0.2
31	29 760	1597	801	10 955 213	50.9	26.9	76.5	0.1	0.1	0.2
32	45 291	1892	890	10 923 856	40.1	19.7	59.0	0.2	0.1	0.3
33	65 168	1758	966	10 876 673	26.3	14.8	40.7	0.2	0.1	0.3
34	120 468	2054	1190	10 809 747	16.8	9.9	26.5	0.2	0.1	0.3
35	189 664	2068	1127	10 687 225	10.8	5.9	16.7	0.2	0.1	0.3
36	383 134	2671	1452	10 495 493	6.9	3.8	10.7	0.3	0.1	0.4
37	875 405	2836	1816	10 109 688	3.2	2.1	5.3	0.3	0.2	0.5
38	1 855 937	2991	1834	9 231 447	1.6	1.0	2.6	0.3	0.2	0.5
39	4 154 044	2522	2412	7 372 519	0.6	0.6	1.2	0.3	0.3	0.7
40	2 456 048	1560	1284	3 215 953	0.6	0.5	1.2	0.5	0.4	0.9
41	714 125	445	441	758 345	0.6	0.6	1.2	0.6	0.6	1.2
≥42	43 686	89	87	43 775	2.0	2.0	4.0	2.0	2.0	4.0
Total	10 989 404	27 481	16 804	11 026 885	2.5	1.5	4.0	2.5	1.5	4.0

NMR, neonatal mortality rate; PMR, perinatal mortality rate; SBR, stillbirth rate. Fetuses‐at‐risk mortality rates provided in this Table are cumulative incidence rates.

^aThe number of fetuses at risk is calculated by summing all live births and stillbirths at that gestational age and beyond. Traditional birth‐based mortality rates are expressed as deaths per 1000 total births (or live births), while fetuses‐at‐risk rates are expressed per 1000 fetuses at risk.