Study measures cost-effectiveness of on-site rapid HIV testing in drug abuse treatment programs

Published on September 10, 2012 at 5:30 AM · No Comments

Less than half of community-based substance abuse treatment programs in the United States currently make HIV testing available on-site or through referral. A new study led by researchers at Weill Cornell Medical College shows the cost-effectiveness of integrating on-site rapid HIV testing into drug treatment programs.

The study, published in today's issue of Drug and Alcohol Dependence, is a collaboration with the HIV Rapid Testing and Counseling Study trial, sponsored by the National Drug Abuse Clinical Trials Network. The randomized clinical trial conducted in 12 community-based substance abuse treatment programs in 2009 found that 80 percent of the participants offered on-site HIV testing with a rapid test accepted the testing offer and obtained test results, as compared with less than 20 percent of those referred for off-site testing. These recent results were published in the June issue of the American Journal of Public Health.

The new study measured the cost-effectiveness of on-site rapid HIV testing in drug abuse treatment programs using data from the HIV Rapid Testing and Counseling Study, including patient demographics, prior testing history, test acceptance and receipt of results, undiagnosed HIV prevalence and program costs. Researchers used the Cost Effectiveness of Preventing AIDS Complications (CEPAC) computer simulation model to project life expectancy, lifetime costs and quality-adjusted life years (QALYs) for the HIV-infected individuals. The researchers calculated the cost per QALY with and without on-site testing, also taking into account the costs associated with testing individuals who turn out not to be HIV-infected.

"Our cost-effectiveness analysis supports integrating HIV screening and prevention services with substance abuse treatment programs, which is called for in President Barack Obama's National HIV/AIDS Strategy, " says the study's lead investigator Dr. Bruce R. Schackman, an associate professor of public health and chief of the Division of Health Policy at Weill Cornell Medical College. "We found that on-site testing with a description of the testing procedure, without pre-test risk-reduction counseling, resulted in a beneficial cost-effectiveness ratio. This strategy provides better value than off-site referral."

Study results show a cost-effectiveness ratio of $60,300 per QALY, which is below one acceptable cost-effectiveness threshold of $100,000 per QALY used in the U.S. In addition, researchers found that participant-tailored risk-reduction counseling does not provide better value in this setting. Risk-reduction counseling increases the cost per participant by nearly 90 percent, and in the trial it had no significant effect on self-reported sexual risk behavior.

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