Table 1:

Demographic Characteristics in 1911 women

	Overall N (%)
Maternal Age, y
<20	86 (4.50)
20–29	962 (50.3)
30–39	849 (44.4)
40–44	14 (0.80)
Race/Ethnicity
Non-Hispanic White	550 (28.8)
Non-Hispanic Black	409 (21.4)
Hispanic	570 (29.8)
Asian and Pacific Islander	382 (20.0)
Marital Status
Never Married	351 (18.4)
Married	1506 (78.8)
Divorced/Widowed	52 (2.80)
Income
<$30,000	363 (19.0)
30,000-$39,999	149 (7.80)
40,000-$49,999	139 (7.27)
50,000-$74,999	218 (11.4)
75,000-$99,999	244 (12.8)
≥$100,000	523 (27.4)
Parity
0	945 (49.5)
1	659 (34.5)
≥2	307 (16.0)
Timing of Neonatal Measurements (days from delivery), median (IQR)	1 (1–2)