TABLE 1. Selected baseline characteristics of adolescent and young adult female participants in a study of a clinic-based intervention addressing intimate partner violence and reproductive coercion, by age-group, western Pennsylvania, 2011–2012.

Characteristic	All (N=2,228)	Adolescents (N=841)	Young adults (N=1,387)
Race/ethnicity
Black	14.1	14.6	13.8
White	79.5	78.8	80.0
Other	6.0	5.8	6.1
Relationship status**
Single	29.6	29.3	29.6
Dating more than one person	1.6	1.2	1.9
In a serious relationship	64.1	67.8	61.9
Married	4.1	0.8	6.1
Clinic location
Rural	71.7	74.7	69.8
Urban	9.7	8.7	10.2
Both	18.7	16.7	19.9
Recent intimate partner violence*	12.1	14.6	10.5
Recent reproductive coercion	6.2	6.9	5.7
Lifetime unintended pregnancy***	16.2	10.5	19.6
Lifetime STD diagnosis***	27.0	19.7	31.4
Mean condom negotiation self- efficacy score (range, 1–5)	4.46 (0.01)	4.45 (0.02)	4.46 (0.02)

^*Difference between age-groups significant at p<.05.

^**Difference between age-groups significant at p<.01.

^***Difference between age-groups significant at p<.001.

Notes: Adolescents were aged 16–19; young adults, 20–24. “Recent” refers to events occurring within three months of the survey. Unless otherwise noted, data are percentages; figures in parentheses are standard errors. Percentages may not total 100.0 because of missing data and rounding.