Prospective evaluation of a model of risk for HIV infection among injecting drug users

Predictors of Self-Reported HIV Infection Among Drug Injectors in Ukraine

OBJECTIVE

To identify characteristics, including current high-risk drug and sex behaviors, associated with self-reported HIV infection among injection drug users (IDUs) in Ukraine.

DESIGN

Targeted sampling of IDUs from Kiev, Odessa, and Makeevka/Donetsk, Ukraine.

METHODS

From June through August 2002, 100 IDUs from each site were recruited through street outreach, including 212 who had previously been tested for HIV and knew their serostatus. Subjects were administered a standardized computer-assisted interview assessing HIV-related drug and sex risk behaviors and history of HIV testing.

RESULTS

Twenty six percent of the 212 participants reported they were HIV-positive. Univariate followed by multiple logistic regression analyses were used to identify factors associated with HIV infection. In the 30-day period before their interview, HIV-infected IDUs were significantly more likely to have injected with a needle previously used by another injector without disinfecting, frontloaded and/or backloaded, and shared the drug solution from a common container. In addition, they had higher prevalence rates for hepatitis B virus and hepatitis C virus than those not infected with HIV. On the other hand, they were more likely to have reported no sex partners and, if sexually active, more likely to have used a condom.

CONCLUSION

The high HIV seroprevalence among IDUs in Ukraine, combined with their continued engagement in needle-related risk behaviors, assures the continuance of the epidemic in this region, a region that is the epicenter of HIV in Europe.

Assessment of HIV risk

Based on the review of existing instruments and analysis of problems encountered in clinical and research practice with one of the most commonly used assessment instruments, the RAB, this paper proposes a number of solutions aimed at improving validity, and efficiency of assessment of HIV risk in drug abusing populations. Briefly, five domains of assessment are discussed: intravenous drug use, high-risk sexual behaviors, knowledge of HIV transmission and methods of prevention, psychological aspects of behavioral change, and epidemiological factors of HIV transmission. The paper discusses also changes in format, scope, and context, as well as scoring procedures that may improve discriminability and sensitivity to detect change of a comprehensive HIV risk assessment instrument. Finally, a process of developing an HIV risk assessment instrument, the ARI-I, which is based on the proposed recommendations and which incorporates methodological improvements discussed in the paper is briefly described.