Table 1.

Participant characteristics at study enrollment by study arm.

	Intervention		Control		Total
	n = 736		n = 620		n = 1356
	n	%	n	%	n	%
Age^a	21.5 (2.3)		21.5 (2.1)		21.5 (2.2)
Race/ethnicity
White	365	49.6	304	49.0	669	49.3
Latina	182	24.7	185	29.8	367	27.1
Black	108	14.7	98	15.8	206	15.2
Other	81	11.0	33	5.3	114	8.4
Currently married (n = 1344)	37	5.1	41	6.7	78	5.8
Educational attainment (n = 1347)
High school or less	522	71.4	453	73.5	975	72.4
Some college	105	14.4	85	13.8	190	14.1
College degree	104	14.2	78	12.7	182	13.5
Health insurance type
Private	226	30.7	185	29.8	411	30.3
Medicaid/state	199	27.0	165	26.6	364	26.8
None	277	37.6	238	38.4	515	38.0
Don't know	34	4.6	32	5.2	66	4.9
Nulliparous (n = 1349)	547	74.7	423	68.6	970	71.9
Primary partner (n = 1335)	588	80.8	498	82.0	1086	81.4
Most effective contraceptive used in past 3 months (n = 1349)
LARC	30	4.1	27	4.4	57	4.2
Depo	53	7.3	44	7.1	97	7.2
Pill, vaginal ring or patch	307	42.1	230	37.2	537	39.8
Condom	185	25.3	181	29.2	366	27.1
None	155	21.2	137	22.1	292	21.7
Condom use at last sex (n = 1351)	220	30.0	205	32.2	425	31.5
Dual method use at last sex (n = 1346)	73	10.0	77	12.5	150	11.1
History of any STI (n = 1307)	188	26.4	160	26.9	348	26.6
Provider discussion of condoms (n = 1349)	315	43.0	299	48.5	614	45.5

Notes: LARC (long-acting reversible contraceptive), STI (sexually transmitted infection).

No significant differences by study arm.

Mean (SD).