Biomedical subjects

Michael M Copenhaver

Publications and source records attributed to Michael M Copenhaver.

3 recordsLinked to original sources

PubMed2006

Behavioral HIV risk reduction among people who inject drugs: meta-analytic evidence of efficacy.

We conducted a meta-analysis of randomized controlled trials (RCTs) to evaluate behavioral HIV risk reduction interventions targeting people who inject drugs. We included 37 RCTs evaluating 49 independent HIV risk reduction interventions with 10,190 participants. Compared to controls, intervention participants reduced injection drug use (IDU) and non-IDU, increased drug treatment entry, increased condom use, and decreased trading sex for drugs. Interventions were more successful at reducing IDU when participants were non-Caucasians, when content focused equivalently on drug-related and sex-related risks, and when content included interpersonal skills training specific for safer needle use. Condom use outcomes improved when two intervention facilitators were used instead of one. IDU outcomes did not decay, but condom use outcomes did. Behavioral interventions reduce risk behaviors among people who inject drugs, especially when interventions target both drug risk and sexual risk behaviors, and when they include certain behavioral skills components. Implications for future interventions are presented.

HIV Infections↗

PubMed2006

Experts outline ways to decrease the decade-long yearly rate of 40,000 new HIV infections in the US.

This paper presents data from a brief, anonymous, open-ended survey of 50 behavioral research experts in HIV prevention. Responses were received from 31 participants who provided input regarding the primary reasons they believe the rate of the HIV epidemic in the United States has persisted in recent years, and how they believe we can most efficiently decrease the current rate of new HIV infections in the United States. Four clusters of reasons suggested for the persistent rate of new infections: Intervention level reasons, Society level reasons, Person level reasons, and Multiple Risk Factor reasons. Three clusters of strategies suggested for decreasing the current rate: Improved Targeting of HIV Prevention efforts, Larg-Scale Changes to HIV prevention, and Integrating HIV Prevention into more aspects of society. Results are reviewed with the objective of providing a fresh perspective on the potential means for addressing the current HIV epidemic.

Adolescent↗

PubMed2006

Optimizing a community-friendly HIV risk reduction intervention for injection drug users in treatment: a structural equation modeling approach.

Research on behavioral HIV risk reduction interventions for injection drug users (IDUs) has focused on primary outcomes (e.g., reduced injection drug use, increased condom use) but has not fully examined the respective roles played by intervention components on these primary outcomes. In this paper, we present a structural equation modeling (SEM) approach in which we specify the causal pathways leading from theory-based intervention components to risk reduction outcomes among a sample of primarily IDUs (n = 226) participating in an inner-city community-based methadone maintenance program. Similar pathways were found leading to both drug- and sexual-related risk reduction outcomes. Findings suggest the importance of targeting participants' risk reduction motivation and behavioral skills versus employing more passive informational strategies. Findings also indicate that our intervention may be optimized by focusing more on participants' risk reduction motivation within the sexual-related content and placing equivalent emphasis on participants' risk reduction knowledge, motivation, and behavioral skills within the drug-related content. By quantifying the specific linkage between intervention components and risk reduction outcomes, our SEM findings offer empirical guidance for optimizing this intervention. This strategy may also serve as a useful theory- and data-driven means to inform the refinement of other behavioral interventions.

HIV Infections↗