224388 Predicting concurrent sexual behavior among a sample of heterosexual men and women at risk for HIV/STIs

Tuesday, November 9, 2010 : 5:10 PM - 5:30 PM

S. Marie Harvey, MPH, DrPH , Department of Public Health, Oregon State University, Corvallis, OR
Christopher R. Agnew, PhD , Department of Psychological Sciences, Purdue University, West Lafayette, IN
Jocelyn Warren, MPH, PhD , Department of Public Health, Oregon State University, Corvallis, OR
Laura E. VanderDrift, MS , Department of Psychological Sciences, Purdue University, West Lafayette, IN
One known risk factor for HIV/STI acquisition is engaging in sexual relationships with multiple partners at the same time or within short intervals. Little is known, however, about the interpersonal dynamics that give rise to concurrent sexual partners. Focusing on individuals who initially reported sexual behavior exclusively with one partner, we used data from a longitudinal study that examined relationship dynamics within the heterosexual involvements of young men and women to predict which participants would initiate sexual relations with an additional partner over time. Men (N=261) and women (N=277) were recruited from Los Angeles and completed four in-person interviews at four-month intervals over one year. At Time 1, measures of commitment to and investments in the relationship with the sexual partner and proportion of condom-protected acts of intercourse with that partner were collected. At Time 2, data on the status of that relationship (intact vs. dissolved), and involvement/protected acts with an additional sexual partner were obtained. Commitment level at Time 1 significantly predicted whether the initial partnership had remained intact and whether the participant initiated a new sexual relationship between Time 1 and 2. Investment at Time 1 also significantly differentiated those who initiated a new sexual relationship. Among those participants who reported additional partners at Time 2, the rate of condom use was generally high with new partners (>60%); however, the rate of condom use with the original partner remained low (<33%). Additional results from multivariate analysis and implications for couple-based prevention programs will be discussed.

Learning Areas:
Assessment of individual and community needs for health education
Diversity and culture
Protection of the public in relation to communicable diseases including prevention or control
Public health or related research
Social and behavioral sciences

Learning Objectives:
1. Describe the prevalence of concurrent sexual partnerships among young heterosexual individuals at increased risk of HIV; 2. Identify relationship dynamics associated with concurrent partnerships and condom use; 3. Discuss the implications of the findings for designing interventions and programs to reduced HIV risk behavior among young adults.

Keywords: HIV Risk Behavior, Sexual Risk Behavior

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am the Principal Investigator for this research project.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.

Back to: 4379.0: Sexual health and sexuality