TABLE 1—

Participant Sociodemographic and Clinical Characteristics at Study Entry: Group Prenatal Care Study; New York, NY; 2008–2011

Characteristic	Group Care (n = 573), % (No.) or Mean ±SD	Individual Care (n = 575), % (No.) or Mean ±SD	P
Race/ethnicitya
Latina	56.2 (322)	59.3 (341)	.76
Black, non-Latina	33.2 (190)	34.3 (197)	.76
White or other, non-Latina	10.6 (61)	6.4 (37)	.37
Enrolled in schoolb	42.3 (240)	48.4 (278)	.10
Ageda 14–21 y	18.7 ±1.8	18.6 ±1.7	.68
Education,b 1–16 y	10.6 ±2.5	11.0 ±2.0	.10
Enrolled in schoolb	42.3 (240)	48.4 (278)	.10
Interviewed in Spanisha	28.7 (164)	16.0 (92)	.61
Relationship statusc
Single, never married	52.2 (291)	59.1 (333)	.30
Living with partner	31.2 (174)	27.5 (155)	.52
Married	14.9 (83)	10.5 (59)	.03
Separated or divorced	0.5 (3)	1.4 (8)	.65
Widowed	1.1 (6)	1.4 (8)	.86
Nulliparousc	85.1 (464)	86.6 (484)	.68
Prior miscarriagec	10.5 (60)	11.0 (63)	.92
Prepregnancy BMIc is 13.4–59.0 kg/m2	24.7 ±6.5	24.2 ±6.2	.19
Gestational age
Entry to carec at 3–28 wk	13.0 ±4.8	12.8 ±4.7	.67
Study entrya at 3–28 wk	14.3 ±5.1	14.7 ±5.2	.34
Substance use in pregnancy
Smokingb	5.3 (30)	5.1 (29)	.76
Drinking alcoholb	8.0 (46)	6.6 (38)	.50
History of STId	34.0 (168)	34.7 (181)	.80

Note. BMI = body mass index;  STI = sexually transmitted infection.

^a0% missing data.

^b< 1% missing data.

^c1%–6% missing data.

^d11% missing data.