|
Mean Maternal Age (years) (std)
a
|
31 (5.4)
|
30 (4.8)
|
0.52
|
|
Missing
|
n = 5
|
n = 20
|
|
Maternal Race/Ethnicity
|
|
Caucasian
|
79.7% (n = 122)
|
90.2% (
n = 430)
|
0.0002
|
|
Hispanic
|
3.3% (n = 5)
|
3.8% (
n = 18)
|
|
Other
|
17.0% (
n = 26)
|
6.0% (
n = 29)
|
|
Missing
|
0
|
3
|
|
Median Maternal BMI (kg/m
2
) (IQR)
a
|
27.1 (23–32.3)
|
25.2 (22.5–31)
|
0.07
*
|
|
Missing
|
(
n = 0)
|
(n = 18)
|
|
Median Gestational Age (weeks) (IQR)
|
37 (34–39)
|
37 (32–39)
|
0.20
*
|
|
Missing
|
(n = 0)
|
(n = 4)
|
|
Country
| | |
0.0012
|
|
United States
|
79.7% (
n = 122)
|
68.7% (
n = 325)
|
|
Canada
|
7.2% (
n = 11)
|
7.0% (
n = 33)
|
|
United Kingdom
|
5.2% (
n = 8)
|
18.4% (
n = 87)
|
|
Other
|
7.8% (n = 12)
|
5.9% (
n = 28)
|
|
Missing
|
(n = 0)
|
(
n = 7)
|
|
Highest Level of Education
| | |
0.63
|
|
Postdoctoral education
|
0% (n = 0)
|
1.3% (
n = 6)
|
|
Doctorate Degree
|
2.0% (n = 3)
|
5.0% (
n = 24)
|
|
Masters Degree
|
20.9% (n = 32)
|
20.8% (
n = 99)
|
|
Bachelors Degree
|
37.3% (
n = 57)
|
36.9% (
n = 176)
|
|
Technical/Trade School
|
3.9% (n = 6)
|
3.6% (n = 17)
|
|
Associates Degree
|
9.8% (n = 15)
|
8.0% (
n = 38)
|
|
High School Diploma
|
20.9% (n = 32)
|
18.2% (n = 87)
|
|
Some High School
|
1.3% (n = 2)
|
2.5% (n = 12)
|
|
Other
|
3.9% (n = 6)
|
3.8% (n = 18)
|
|
Missing
|
(n = 0)
|
(n = 3)
|
|
Employment During Pregnancy
| | |
0.09
|
|
Work outside the home (full/part time)
|
67.1% (
n = 102)
|
60.4% (
n = 288)
|
|
Work at home (full/part time)
|
5.9% (n = 9)
|
7.8% (
n = 37)
|
|
Stay at Home Mom
|
15.8% (n = 24)
|
24.5% (
n = 117)
|
|
Other
|
7.2% (n = 11)
|
4.0% (
n = 19)
|
|
Unemployed
|
4.0% (n = 6)
|
3.4% (
n = 16)
|
|
Missing
|
(n = 1)
|
(n = 3)
|
|
High-risk pregnancy
|
24.8% (n = 38)
|
35.0% (
n = 168)
|
0.025
|
|
Medical condition diagnosed before pregnancy
|
3.3% (n = 5)
|
7.9% (n = 38)
| |
|
Medical condition diagnosed during pregnancy
|
12.4% (n = 19)
|
8.1% (
n = 39)
| |
|
Previous pregnancy complication
|
3.3% (n = 5)
|
7.1% (
n = 34)
| |
|
Previous pregnancy loss
|
5.9% (n = 9)
|
11.9% (n = 57)
| |
