Table 1:

Sociodemographic characteristics of sample stratified by birth etiology.

	Uncomplicated n=11	PTB n=28	p-Value
Age, years, median (SD)	23.6 (7.5)	23.2 (8.7)	0.91
Race/Ethnicity, %
Non-hispanic white	1/11 (9.1)	0/28 (0)	0.04 (ANOVA)
Hispanic/Latina	2/11 (18.2)	0/28 (0)
Nonhispanic black	8/11 (80.1)	28/28 (100)
Other	0/11(0)	0/28 (0)
Substance use, %	7/11 (63.6)	18/28 (64.3)	0.96
Education, %
Did not finish high school	3/11 (27.3)	9/28 (32.1)	0.6 (ANOVA)
High School/GED	5/11 (45.5)	14/28 (50.0)
Continued post high school	3/11 (27.3)	5/28 (17.9)
Married/living as married	8/11 (72.7)	7/28 (25)	<0.01
Annual income, dolars (mean, SD)	10,745.4 (97.2)	10,429.8 (124.3)	0.83
Nulliparous, %	5/11 (45.5)	13/28 (46.4)	0.95
BMI (mean, SD)	26.3 (9.4)	27.9 (7.1)	0.8