Median maternal age (years) (n = 1671) | 30.0 years (range 18–47 years; IQR = 8) |
---|---|
Parity (n = 1702) | |
Nulliparous | 931 (54.7 %) |
Gravida 1–4 | 754 (44.3) |
Grand-Multigravida 5+ | 17 (1.0 %) |
Country (n = 1696) | |
USA | 1208 (71.2 %) |
UK | 230 (13.6 %) |
Australia | 95 (5.6 %) |
Canada | 94 (5.5 %) |
Ireland | 15 (0.9 %) |
New Zealand | 10 (0.6 %) |
Other* | 44 (2.6 %) |
Maternal Education (n = 1629) | |
High school or less | 483 (29.7 %) |
Associate degree | 208 (12.8 %) |
Technical/trade school | 122 (7.5 %) |
Bachelor’s degree | 490 (30.1 %) |
Master’s degree | 272 (16.7 %) |
Doctorate degree | 54 (3.2 %) |