News Release

Friday, February 16, 2018

PHAT Life: Effective HIV intervention for youth in the criminal justice system

A group risk-reduction intervention that uses role-playing, videos, games, and skill-building exercises to promote knowledge about HIV/AIDS, positive coping, and problem-solving skills for high-risk teens in the juvenile justice system, showed great potential for reducing sexual risk-taking. The findings were published in Health Psychology and funded by the National Institute on Minority Health and Health Disparities (NIMHD), part of the National Institutes of Health.

Annually, over 1 million youth are involved in the American juvenile justice system. They experience more mental illness, substance abuse, and sexually transmitted infections than their non-adjudicated peers. However, few evidence-based interventions exist to address these problems.

Led by Geri Donenberg, Ph.D., University of Illinois, Chicago, a randomized trial called PHAT Life: Preventing HIV/AIDS Among Teens, was conducted with 310 urban youth, ages 13 to 17, on probation in Chicago’s Cook County, which has the second-largest county justice system in the United States.

The participant pool was 66 percent male and 90 percent African-American. Youth were assigned to either PHAT Life or an equally intensive health information program. Both programs consisted of eight sessions, each lasting 90 to 120 minutes, over the course of a two-week period, and were delivered at four detention-alternative after-school programs run by the Cook County Department of Juvenile Probation and Court Services.

The study measured the degree of condom use (“always” versus “less than always”) and number of sexual partners in the six months before and after the PHAT Life intervention. The teens completed a two-hour baseline assessment no more than one week before receiving the interventions and then again six months after baseline.

Among participants who reported the highest-risk sexual behavior (multiple partners and inconsistent condom use) at baseline, those who were assigned to PHAT Life were over four times more likely than those in the control group to report a reduction in number of sexual partners and an increase in consistent condom use. Among sexually active teens who reported having had sex prior to age 12, those who participated in PHAT Life reported significantly fewer sexual partners at six months post-intervention than those in the control group.

“These findings reinforce the need for effective HIV/AIDS prevention strategies among vulnerable populations. Programs like this present opportunities to use effective methods, which result in continual benefits,” said Dr. Eliseo J. Pérez-Stable, director of NIMHD.

According to the Centers for Disease Control and Prevention, in 2015, youth aged 13 to 24 accounted for more than 1 in 5 new HIV diagnoses in the United States. Currently, youth ages 15-24 account for half of all new STD infections, a marker of unprotected sexual behavior and risk for HIV.

“Uniquely tailored interventions like PHAT Life that reduce adolescent risk behavior are essential to mitigate young offenders’ poor long-term trajectories. Limited resources require evidence-informed decisions about who can benefit the most from HIV-prevention efforts. Our findings suggest that PHAT Life can reduce sexual risk among the highest-risk teens,” said Dr. Donenberg.

The next step is to identify how best to disseminate PHAT Life resources to ensure it is self-sustaining in the juvenile justice system. Dr. Donenberg and her team are currently evaluating two approaches to sustainability of the program.

NIMHD grant number 3R01MD005861-05S1

About the National Institute on Minority Health and Health Disparities (NIMHD): NIMHD leads scientific research to improve minority health and eliminate health disparities by conducting and supporting research; planning, reviewing, coordinating, and evaluating all minority health and health disparities research at NIH; promoting and supporting the training of a diverse research workforce; translating and disseminating research information; and fostering collaborations and partnerships.

About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit

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