|
(N = 9404) |
(N = 18808) |
Maternal Demographic and Clinical Characteristics |
|
|
Age at index stillbirth/birth, years [mean (SD)] |
27.5 ± 5.8 |
27.5
± 5.8 |
Race/ethnicity |
|
|
Non-Hispanic |
|
|
American Indian or Alaska Native |
61 (0.6%) |
101
(0.5%) |
Asian |
61 (0.6%) |
153 (0.8%) |
Native Hawaiian or Other Pacific Islander |
51 (0.5%) |
52
(0.3%) |
Black or African American |
62 (0.7%) |
51 (0.3%) |
White |
6204 (66.0%) |
13731 (73.0%) |
Multiple Races |
442 (4.7%) |
692 (3.7%) |
Hispanic |
2301 (24.5%) |
3994 (21.2%) |
Unknown race/ethnicity |
222 (2.4%) |
34 (0.2%) |
Mother’s birth year |
1971.5 ± 12.9 |
1971.5 ± 12.9 |
Mother’s education at index birth |
|
|
High school degree or less |
4046 (43.0%) |
7617
(40.5%) |
Some college and college degree |
4269 (45.4%) |
9638
(51.2%) |
Post-college |
424 (4.5%) |
1340 (7.1%) |
Unknown |
665 (7.1%) |
213 (1.1%) |
Number of prenatal visits2
|
6 (4-9) |
11
(9-12) |
Number of previous live births2
|
1 (0-2) |
1
(0-2) |
At least one previous live birth still living |
5473 (58.2%) |
12073
(64.2%) |
Method of delivery |
|
|
Cesarean and vaginal/forceps/vacuum |
0 (0.0%) |
27
(0.1%) |
Cesarean only |
678 (7.2%) |
3495 (18.6%) |
Vaginal/forceps/vacuum only |
7310 (77.7%) |
15216
(80.9%) |
Others/Unknown |
1416 (15.1%) |
70 (0.4%) |
Had at least one birth defect |
686 (7.3%) |
159 (0.8%) |
Maternal Pre-Pregnancy Body Mass Index (BMI,
kg/m2)2
|
24.0 (21.1-29.1) |
23.2
(20.7-27.4) |
Missing maternal pre-pregnancy BMI |
3477 (37.0%) |
5592
(29.7%) |
Mother’s weight gain during index pregnancy (kg)2
|
8.2 (4.1-12.7) |
13.6 (10.4-18.1) |
Missing mother’s weight gain due to index pregnancy |
3349 (35.6%) |
5383 (28.6%) |
Mother had gestational diabetes due to index pregnancy |
141 (1.5%) |
384 (2.0%) |
Mother had pre-existing diabetes prior to index pregnancy |
152 (1.6%) |
110 (0.6%) |
Mother had diabetes (gestational/pre-existing) during index pregnancy |
302 (3.2%) |
498 (2.6%) |
Mother had gestational hypertension due to index pregnancy |
1166
(12.4%) |
1861 (9.9%) |
Mother had chronic hypertension prior to index pregnancy |
95 (1.0%) |
115 (0.6%) |
Paternal Demographic and Clinical Characteristics |
|
|
Age at index stillbirth/birth, years |
30.3 ± 6.4 |
30.1 ±
6.2 |
Race/ethnicity |
|
|
Non-Hispanic |
|
|
American Indian or Alaska Native |
50 (0.5%) |
59
(0.3%) |
Asian |
48 (0.5%) |
105 (0.6%) |
Native Hawaiian or Other Pacific Islander |
39 (0.4%) |
73
(0.4%) |
Black or African American |
71 (0.8%) |
87 (0.5%) |
White |
5702 (60.6%) |
13109 (69.7%) |
Multiple Races |
276 (2.9%) |
640 (3.4%) |
Hispanic |
1517 (16.1%) |
3132 (16.7%) |
Unknown |
1701 (18.1%) |
1603 (8.5%) |
Father’s birth year |
1968.6 ± 13.4 |
1969.0 ± 13.2 |
Father’s education at index birth |
|
|
High school degree or less |
1891 (20.1%) |
5904
(31.4%) |
Some college and college degree |
1992 (21.2%) |
8729
(46.4%) |
Post-college |
605 (6.4%) |
2641 (14.0%) |
Unknown5
|
4916 (52.3%) |
1534 (8.2%) |
Index Stillborn/Live-born Demographic and Clinical
Characteristics |
|
|
Gestational Age, weeks2
|
29 (23-36) |
39
(38-40) |
Sex |
|
|
Male |
4735 (50.4%) |
9778 (52.0%) |
Female |
4526 (48.1%) |
9030 (48.0%) |
Birth year |
1999.0 ± 12.5 |
1999.0 ± 12.5 |
Any fetal structural anomalies or birth defects |
1686 (7.3%) |
159
(0.8%) |
Birthweight, g2
|
1145 (440-2567) |
3340
(3020-3646) |
Any Stillbirth Family History |
|
|
All relatives |
912 (12.5%) |
1524 (11.6%) |
First-degree relatives |
215 (3%) |
387 (2.9%) |
Second-degree relatives |
277 (3.8%) |
416 (3.2%) |
Third-degree relatives |
563 (7.7%) |
911 (6.9%) |