Abstract: Objective： To study the situation of non-consensual sex among those unmarried young women seeking abortion， and to explore the influence of health risk behaviors on the experience of non-consensual sex. Methods： The information regarding non-consensual sex and health risk behaviors was collected by the Computer Assisted Self Interview (CASI) through an anonymous cross-sectional survey. Respondents were those unmarried young women seeking abortion aged less than or equal to 24 years. Results： The prevalences of verbal harassment， ordinary body harassment， forced sexual fondling， attempted rape and sexual coercion were 35.72%， 57.67%， 24.41%， 17.13% and 12.32%, respectively. Logistic regression showed that respondents with more health risk behaviors would be more likely to experience various non-consensual sex （OR： ranged from 1.23 to 1.33）. Furthermore, those having multiple sexual partners were more likely to suffer attempted rape and sexual coercion （OR=2.31 and 3.95）. In addition， those who had the first sexual intercourse at older age were less likely to suffer attempted rape （OR=0.89）. Conclusions： It was pervasive social problem that those unmarried young women seeking abortion suffered the non-consensual sex. Those women with more health risk behaviors would be more likely to experience various non-consensual sex.

Key words: Abortion, induced, Questionnaires, Sexual behavior, Dangerous behavior, SHANGHAI, Adolescent