Table 1.

Baseline Characteristics of Analysis Sample and Total CHOICE Population

	Sample (n=4,167)	CHOICE (N=5,087)
Age (y)	25.2±5.7	25.2±5.7
Race
African American	1,967 (47.4)	2,443 (48.3)
White	1,874 (45.2)	2,242 (44.3)
Others	307 (7.4)	376 (7.4)
Education
High school diploma or less	1,424 (34.2)	1,820 (35.8)
Some college	1,772 (42.5)	2,142 (42.1)
College degree or graduate school	969 (23.3)	1,123 (22.1)
Income per month
None	686 (16.9)	883 (17.8)
$1–800	1,308 (32.2)	1,606 (32.4)
$801–1,600	1,225 (30.2)	1,473 (29.7)
$1,601 or more	837 (20.6)	990 (20.0)
Body mass index
Underweight	134 (3.2)	151 (3.0)
Normal	1,664(39.9)	2,042 (40.1)
Overweight	1,059 (25.4)	1,295 (25.5)
Obese	1,310 (31.4)	1,599 (31.4)
Receiving public assistance
No	2,785 (66.8)	3,331 (65.5)
Yes	1,382 (33.2)	1,756(34.5)
Trouble paying for basic expenses
No	2,496 (59.9)	3,021 (59.4)
Yes	1,671 (40.1)	2,066 (40.6)
Insurance
None	1,802 (43.6)	2,203 (43.7)
Private	1,865 (45.1)	2,219 (44.0)
Public	466 (11.3)	624 (12.4)
Gravidity
0	1,184 (28.4)	1,428 (28.1)
1	907 (21.8)	1,095 (21.5)
2	757 (18.2)	913 (17.9)
3 or higher	1,319 (31.7)	1,651 (32.5)
Parity
0	1,985 (47.6)	2,377 (46.7)
1	1,026 (24.6)	1,256 (24.7)
2	724 (17.4)	901 (17.7)
3 or higher	432 (10.4)	553 (10.9)
Unintended pregnancies
0	1,408 (33.9)	1,718 (33.9)
1	1,159 (27.9)	1,397 (27.5)
2	704 (16.9)	849 (16.7)
3 or more	885 (21.3)	1,111 (21.9)
History of abortion
No	2,518 (60.4)	3,115 (61.2)
Yes	1,649 (39.6)	1,972 (38.8)
History of STI
No	2,534 (60.8)	3,067 (60.3)
Yes	1,633 (39.2)	2,020 (39.7)
Any current STI
No	3,905 (93.7)	4,736 (93.1)
Yes	262 (6.3)	351 (6.9)

STI, sexually transmitted infection.

Data are mean±standard deviation or n (%).