Melissa Davey-Rothwell

Social Norms, Social Networks, and HIV Risk Behavior Among Injection Drug Users

Social network structure and norms are linked to HIV risk behavior. However little is known about the gradient of norm of HIV risk that exists among social networks. We examined the association between injection risk network structure and HIV risk norms among 818 injection drug users (IDUs). IDUs were categorized into four distinct groups based on their risk behaviors with their drug networks: no network members with whom they shared cookers or needles, only cooker-sharing member, one needle-sharing member, and multiple needle-sharing members. The riskiest group, networks of multiple needle sharers, was more likely to endorse both risky needle-sharing and sex norms. Networks of only cooker sharers were less likely to endorse high-risk norms, as compared to the networks with no sharing. There were also differences based on gender. Future HIV prevention interventions for IDUs should target both injection and sex risk norms, particularly among IDUs in the multiple needle-sharing networks.

The STEP into Action study: a peer-based, personal risk network-focused HIV prevention intervention with injection drug users in Baltimore, Maryland

AIMS To assess the effectiveness of a peer-based, personal risk network-focused HIV prevention intervention to (i) train injection drug users (IDUs) to reduce injection and sex risk behaviors, (ii) conduct outreach to behaviorally risky individuals in their personal social networks [called risk network members (RNM)], and (iii) reduce RNM HIV risk behaviors. DESIGN Randomized controlled trial with prospective data collection at 6, 12 and 18 months. Intervention condition consisted of five group sessions, one individual session and one session with Index and the RNM. SETTING This study was conducted in Baltimore, Maryland from March 2004 to March 2006. PARTICIPANTS (i) Index participants were aged ≥ 18 years and self-reported injection drug use in the prior 6 months and (ii) their RNM who were aged ≥ 18 years and drug users or sex partners of Index. MEASUREMENTS Outcomes included: (i) injection risk based on sharing needles, cookers and cotton for injection and drug splitting, (ii) sex risk based on number of sex partners, condom use and exchanging sex and (iii) Index HIV outreach behaviors. FINDINGS A total of 227 Index participants recruited 336 RNM. Retention of Index at 18-month follow-up exceeded 85%. Findings suggest that the experimental condition was efficacious at 18 months in reducing Index participant injection risk [odds ratio (OR) = 0.38; 95% confidence interval (CI) = 0.18-0.77), drug-splitting risk (OR = 0.46; 95% CI = 0.25-0.88) and sex risk among Index (OR = 0.53; 95% CI = 0.34-0.86). Significant intervention effect on increased condom use among female RNM was observed (OR = 0.34; 95% CI = 0.18-0.62). CONCLUSIONS Training active IDU to promote HIV prevention with behaviorally risky individuals in their networks is feasible, efficacious and sustainable.

Gender differences in social network influence among injection drug users: perceived norms and needle sharing.

Whereas substantial research has linked perceived norms and HIV sexual risk behavior, less attention has been given to the relationship between perceived norms and injection drug practices. This study investigated the relationship between needle sharing and perceived norms in a sample of injection drug users. Data were collected through face-to-face interviews with 684 injectors from the STEP Into Action (STEP) project in Baltimore, Maryland. Logistic regression was used to assess the associations between perceived norms (descriptive and injunctive norms) and needle sharing. Results were stratified by gender. Descriptive norms were significantly related to needle sharing among males (AOR = 1.58, 95%CI = 1.20–2.40) and females (AOR = 1.78; 95%CI = 1.24–2.55). Whereas injunctive norms were significantly associated with needle sharing among men (AOR = 1.30 95%CI = 1.05–1.61), this association was not significant among women (AOR = 0.99; 95%CI = 0.74–1.31). These findings suggest the utility of peer education interventions that promote norms regarding risk reduction among injection drug users. The data also provide support for gender-specific HIV prevention interventions.

Social network approaches to recruitment, HIV prevention, medical care, and medication adherence

Abstract:This article reviews the current issues and advancements in social network approaches to HIV prevention and care. Social network analysis can provide a method to understand health disparities in HIV rates, treatment access, and outcomes. Social network analysis is a valuable tool to link social structural factors to individual behaviors. Social networks provide an avenue for low-cost and sustainable HIV prevention interventions that can be adapted and translated into diverse populations. Social networks can be utilized as a viable approach to recruitment for HIV testing and counseling, HIV prevention interventions, optimizing HIV medical care, and medication adherence. Social network interventions may be face-to-face or through social media. Key issues in designing social network interventions are contamination due to social diffusion, network stability, density, and the choice and training of network members. There are also ethical issues involved in the development and implementation of social network interventions. Social network analyses can also be used to understand HIV transmission dynamics.

The dynamic relationship between social norms and behaviors: the results of an HIV prevention network intervention for injection drug users.

AIMS Social norms are a key source of influence on health behaviors. This study examined changes in social norms and relationships between HIV injection risk behaviors and social norms among injection drug users (IDUs) involved in an experimental intervention. DESIGN Randomized clinical trial. SETTING An HIV Prevention Trials Network study, Philadelphia, USA. PARTICIPANTS IDUs, called indexes, and their social network members, who were drug or sex partners, were recruited for an HIV prevention intervention and followed for up to 30 months (n = 652). Indexes were randomized into a peer education intervention or control condition. MEASUREMENTS Outcomes of injection-related HIV risk behaviors (sharing needles, sharing cookers, sharing cotton, front-/back-loading) were measured every 6 months and the social norms of these four risk behaviors were assessed every 12 months. FINDINGS There was a statistically significant intervention effect on all four social norms of injection behaviors, with participants in the intervention reporting less risky social norms compared with controls (changes in mean score: needles, -0.24, P = 0.007; cookers, -0.33, P = .004; cottons, -0.28, P = .0165; front-/back-loading, -0.23, P = .002). There was also a statistically significant bidirectional association with social norms predicting injection risk behaviors at the next assessment and risk behaviors predicting social norms at the subsequent visit. CONCLUSIONS Through social network interventions it is feasible to change both injection risk behaviors and associated social norms. However, it is critical that social network interventions focus on publically highlighting behavior changes, as changing social norms without awareness of behaviors change may lead to relapse of risk behaviors.

Social Networks, Norms, and 12-Step Group Participation

In a sample of active drug users, we assessed the associations between frequency of attending a 12-step program, perceived social norms, and social network structure. Participants who reported that most or all of their drug partners attended 12-step groups were over ten times more likely to be frequent attenders compared to individuals who did not go to Narcotics Anonymous (NA). While social network structure of number of cocaine and heroin users and number of members in treatment was associated with frequent attendance, there was no association among individuals who infrequently went to a 12-step program. Individuals who are trying to control their drug use should be encouraged to affiliate with others in recovery or attending a 12-step program.

An examination of associations between social norms and risky alcohol use among African American men who have sex with men

BACKGROUND Research has indicated associations between risky alcohol consumption and sexual risk behavior, which may in turn present risk of HIV acquisition or transmission. Little is known about social determinants of problematic alcohol use among African American MSM (AA MSM), a risk group disproportionately affected by HIV. The present study sought to explore associations between risky alcohol use and perceived peer norms of alcohol use among a sample of urban African American men who have sex with men (AA MSM). METHODS A cross-sectional survey was administered to 142 AA MSM in Baltimore, Maryland, recruited using active and passive methods. Risky and hazardous alcohol use was assessed using the Alcohol Use Disorders Identification Test (AUDIT) and participants self-reported descriptive and injunctive peer norms regarding frequency and quantity of alcohol consumption. RESULTS Nearly half reported hazardous or high risk consumption of alcohol. Perceived peer alcohol norms, both descriptive and injunctive, were associated with alcohol use, including hazardous use. CONCLUSIONS The findings highlight the role of social factors on problematic alcohol use among AA MSM. Results indicate that AA MSMs use of alcohol is associated with their perceptions of peer alcohol use. Potential interventions could include norms-based campaigns that seek to reduce risky alcohol consumption among AA MSM as well as programs to screen and identify individuals with problematic alcohol use.

Sexual Networks and Housing Stability

Unstable housing is related to a range of health problems including substance abuse, poor mental health, and HIV. Little is known about how sexual partners’ attributes influence access to resources such as housing. The purpose of the present study was to examine the relationship between sexual network characteristics and improvements in housing situation among a sample of drug users using a longitudinal design. Size of one’s sex network was not associated with housing change. However, having a main partner and having a sex partner who lent money was associated with moving from a homeless state at baseline to being housed at follow-up. Also, having a sex partner who was a drug user was associated with decrease in the odds of improving one’s housing situation.

Housing stability, residential transience, and HIV testing among low-income urban African Americans.

The association between housing and HIV has been widely demonstrated, although inquiry into HIV testing has been largely limited to the homeless. This study examines correlates of HIV testing within the past 6 months with housing stability and residential transience (moving two or more times in the past 6 months) among 620 low-income urban African Americans. Unstably housed and transient participants were more likely to participate in high-risk sex behaviors than stably housed participants and non-transient participants, respectively. In multivariate analyses, residential transience was positively associated with recent HIV testing; however, persons unstably housed were not more likely to have recently been tested for HIV despite their increased vulnerability and risk. While structural interventions are necessary to address the HIV disparities related to housing, increased community-based and mobile testing centers may be able to improve access to HIV testing among unstably housed.

An examination of spatial concentrations of sex exchange and sex exchange norms among drug users in Baltimore, MD.

Baltimore, Maryland, consistently ranks highest nationally in rates of sexually transmitted diseases and sexually transmitted infections (STDs/STIs) and human immunodeficiency virus (HIV) infection. Prior studies have identified geographic areas where STI and HIV infection in the city is most prevalent. It is well established that sex exchange behavior is associated with HIV and STIs, yet it is not well understood how sex exchangers are spatially distributed within the high-risk areas. We sought to examine the spatial distribution of individuals who report sex exchange compared to those who do not exchange. Additionally, we examined the spatial context of perceived norms about sex exchange. Data for the study came from a baseline sample of predominately injection drug users (n = 842). Of these, 21 percent reported sex exchange in the prior ninety days. All valid baseline residential addresses of recruited participants living within Baltimore City boundaries were geocoded. The multidistance spatial cluster analysis (Ripleys K-function) was used to separately calculate the K-functions for the addresses of recruited participants reporting sex exchange versus non-sex exchange. Evidence of spatial clustering of sex exchangers was observed and norms aligned with these clusters. Of particular interest was the high density of sex exchangers in one specific housing complex of East Baltimore, which happens to be the oldest in Baltimore. These findings can inform targeted efforts for screening and testing for HIV and STIs and placement of both individual and structural-level interventions that focus on increasing access to risk reduction materials and changing norms about risk behaviors.