World Journal of AIDS, 2013, 3, 320-326 Published Online December 2013 (http://www.scirp.org/journal/wja) http://dx.doi.org/10.4236/wja.2013.34041 Open Access WJA Protocol for a Respondent-Driven Sampling Study Exploring the Roles of Peer Norms in HIV-Related Practices of Gay Men* Iryna Zablotska1#, John de Wit2, Graham Brown3,4, Bruce Maycock4, Christopher Fairley5, Michelle McKechnie1, Garrett Prestage1,3 1The Kirby Institute, University of New South Wales, Paddington, Australia; 2National Centre in HIV Social Research, University of New South Wales, Paddington, Australia; 3The Australian Research Centre in Sex, Health and Society, La Trobe University, Mel- bourne, Australia; 4Curtin University, Bentley, Australia; 5Melbourne School of Population Health, University of Melbourne and Melbourne Sexual Health Centre, Melbourne, Australia. Email: #izablotska@kirby.unsw.edu.au Received July 25th, 2013; revised August 24th, 2013; accepted August 29th, 2013 Copyright © 2013 Iryna Zablotska et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT Introduction: Sexual behaviour among gay and other men who have sex with men (GMSM) is influenced by the shared understanding of HIV/STI risk and peer norms regarding sexual behav iour. However, there is little research evi- dence to support this relationship. The unique geographic spread of Australian communities, the history of Australian HIV epidemic and the different patterns in risk y sexual practices and HIV diagnoses across Australia present an oppor- tunity to explore the role of social norms and GMSM behaviours in shaping different patterns of HIV epidemics. We describe the protocol of the study of contemporary norms in networks and communities of GMSM (CONNECT) which investigates gay community behavioural norms and practices. Methods: CONNECT is aimed to 1) identify the patterns of connections between individuals in GMSM communities and assess how they shape HIV-related behaviours; 2) de- scribe the relationship between social norms and sexual practices; and 3) compare the norms and patterns of behaviour in geographically and epidemiologically distinct GMSM populations in three Australian states New South Wales, Vic- toria and Western Australia, in order to identify local community n orms and barriers to effective HIV prevention. This quantitative cross-sectional study uses respondent-driven sampling (RDS) for recruitment. Results: Analyses will be carried out on individual and community level and will investigate the relationship between community-level behav- ioural norms and associated practices of individuals. Conclusion: CONNECT is anticipated to inform HIV prevention services to better target and increase the effectiveness of the current health promotion for GMSM in the context of in- creasing HIV/STI incidence. Keywords: HIV; GMSM; Networks; Behaviour; Community Norms 1. Introduction Sexual contact between gay and other men who have sex with men (GMSM) accounts for 85% of newly acquired HIV infections and is the most important HIV transmis- sion route in Australia [1]. Therefore, GMSM are the highest priority group for HIV prevention [2]. Despite Australia’s apparent success in reducing new HIV diagnoses in 1990 s, ther e has been a steady increase in the annual number of new HIV cases nationally since 1999 [3]. Similar to worldwide trends [4-6], the resurgent HIV epidemic among GMSM has been accompanied by increasing rates of STI [7]. During the last decade, there have been marked changes in the patterns of the HIV epidemic across Australian jurisdictions, with a steady upward trends being recorded in all states, except for New South Wales (NSW)—the state with the highest number of newly diagnosed HIV infection [3,7]. *Funding: the Kirby Institute and the National Centre in HIV Social Research receive project funding from the Australian Government De- artment of Health and Ageing. The CONNECT study is funded by the Project Grant from the National Health and Medical Research Council, Australia (NHMRC 630 5 47). #Corresponding author. Sexual behaviours among GMSM are known to be as-
Protocol for a Respondent-Driven Sampling Study Exploring the Roles of Peer Norms in HIV-Related Practices of Gay Men 321 sociated with HIV infection, and unprotected anal inter- course (UAI) is the practice of the greatest risk [8]. Steady increases in UAI among GMSM, reported in re- cent years in Australia and worldwide, have been linked to the decreasing perceptions of risk [9], more frequent reliance on risk reduction practices, particularly sero- sorting, rather than on condom use [8,10,11], improved survival and growing numbers of HIV-positive GMSM [8,9,12], and changes in social and sexual networking. Recent increases in UAI among GMSM, including UAI with serodiscordant casual partners, have been linked to the increasing HIV/STI incidence [3,8,13,14]. In Australia, trends in sexual behaviour across the states and territories mirror the HIV diagnoses trends and both differ across jurisdictions [13,15]. These differences in trends may be due to social differences among juris- dictions [16], the size and diversity of gay communities [12], the resources and the scale of the health promotion campaigns in the states [17], differences in background HIV prevalence [18], mixing of HIV positive and nega- tive GMSM, and the patterns of risk management by both HIV positive and negative men. It has been assumed that GMSM communities across Australia differ with respect to their size [12] and culture. However, there has been limited research into what effect these differences may have on the interactions of individuals within com- munities and on their HIV/STI risk and risk reduction norms and practices [19,20]. It is known that sexual behaviour among GMSM is in- fluenced by the shared understanding of HIV/STI risk and shared norms regarding sexual behaviour in GMSM communities [21 ]. Risk reduction is more likely to occur if perceived community norms are supported and ac- cepted. Currently, little is known about norms with re- spect to HIV/STI risk and risk reduction behaviours in GMSM communities, how GMSM understand commu- nity norms, and whether GMSM with different levels and types of connection to the gay community perceive be- havioural norms in their own different ways. Previous studies found that the use of condoms was associated with men’s attachment to the gay community, while socio-economic differences mediated this relationship [22]. However, it remains unclear how attachment to gay community affects behavioural norms and how norms are transmitted within and across different strata of GMSM and translated into sexual practices. The unique geographic spread of Australian society and GMSM communities, the history of HIV epidemic and HIV prevention work across Australia, as well as different patterns in HIV diagnoses and trends in high risk sexual practices present an opportunity to explore and describe the role of social norms and individual be- haviours in shaping different patterns in HIV epidemic across Australia. The study of contemporary norms in networks and communities of GMSM (CONNECT) was designed to elucidate these knowledge gaps and help to better understand why increasing efforts in HIV preven- tion during the last decade have been largely unable to reduce risky practices and the growing HIV incidence among GMSM. 2. Methods 2.1. Theoretical Background The design and implementation of this study is guided by the current understanding of the central role of social processes in HIV prevention [23,24]. First, the study in- vestigates behaviours and risk as the products of dynamic social interaction rather than “a static individual” phe- nomena. It is designed to take into account the context, negotiation and the different socially-constructed mean- ings that behaviour and risk may have in specific situa- tions [23,25,26], as well as the reciprocal influence be- tween the context and th e individual [27]. Understanding the interaction between individuals and their context is critical to the impact of the prevention interventions be- yond the indiv idual to the community level, and are vital to sustainable behaviour change [28]. Second, the CON- NECT study investigates the social norms and beliefs among participants about how people should act in a given context, particularly the descriptive and subjective norms regarding sexual behaviours and HIV/STI in their peer networks [29,30]. 2.2. Hypotheses The CONNECT study is driven by three key hypotheses: 1) HIV/STI sexual risk and risk reduction behaviours of individual GMSM depend on the behaviours of other GMSM with whom they interact, both sexually and so- cially; thus, the patterns of connections between individ- ual GMSM are likely to have an effect on the overall levels of risk and risk reduction behaviours among GMSM. 2) GMSM with higher degrees of attachment to main- stream gay communities are more supportive of descrip- tive and subjective norms in their peers related to safe sex and are more likely to consistently maintain safe sex practices that conform to these norms. 3) The patterns of connections and behavioural norms of the geographically distinct po pulations of GMSM may influence the patterns of behaviour and the adoption of safe sex messages in local GMSM networks resulting in differing HIV notification trends in the Australian states. 2.3. Recruitment Methods The choice of recruitment methodology to address these Open Access WJA
Protocol for a Respondent-Driven Sampling Study Exploring the Roles of Peer Norms in HIV-Related Practices of Gay Men 322 hypotheses is important. Traditional epidemiological ap- proaches see individuals, with their characteristics and behaviours, as independent of each other [31] and ignore the effect of connections between individuals. Therefore, they miss to acknowledge larger social forces that drive different patterns of behaviour. If models of HIV/STI- related behaviours were to incorporate patterns of social and sexual interactions between persons in a population, they would need to use methods that allow the tracking of connections between individuals, such as peer-referral methods. Peer-referral methods have significantly developed re- cently, particularly respondent-driven sampling (RDS) [32]. Developed and tested by the US Centers for Dis- ease Control, this methodology has been successfully used among GMSM worldwide and has been used in HIV/STI research to address the issues of hidden popula- tions [33], the role of networks in infectious disease spread [34], sexual behaviours [35], and epidemic mod- elling [36]. The application details and effectiveness of RDS have been publi sh ed [33]. Although RDS methodology was developed and lar g e ly used to capture representative samples of popu lations and recruit hard-to-recruit groups, this is not the only reason we used this recruitment methodology. We employed RDS mainly to explore and explain the role of connec- tions between individuals in shaping personal net-works and community behavioural norms within these networks. Stringent confidentiality safeguards of this method also provide a bonus benefit for studies of sexual behaviours, like ours, w h i ch use peer-referral [37]. Since this is the first study among Australian GMSM to use RDS methodology for recruitment, the methodol- ogy was successfully pretested in a pilot study of 100 GMSM in Sydney, NSW. The CONNECT study is aimed to 1) identify the pat- terns of connections between individuals in communities GMSM and assess how they shape HIV related behav- iours; 2) describe the relationship between social norms and sexual practices among GMSM (particularly men with differing degrees of engagement with GMSM com- munities); and 3) compare the patterns of behaviour in geographically and epidemiologically distinct popula- tions of GMSM in three Australian states New South Wales, Victoria and Western Australia, in order to iden- tify local barriers to effective HIV prevention. In accom- plishing these aims, the CONNECT study is anticipated to inform state and local HIV prevention services in Australia to better target and, thus, increase the effec- tiveness of the current health promotion for GMSM in the context of increasing HIV/STI incidence. CONNECT is a cross-sectional quantitative study con- ducted in three geographically distinct, diverse and large gay communities in Sydney (NSW), Melbourne (Victoria) and Perth (WA). Eligible to participate in this study are men aged 18 years or older who live in proximity to any of the three research sites (state capital cities Sydney, Melbourne and Perth) or participate in the life of local GMSM community and acknowledge having had sex with another man during the preceding 12 months. Data collection employs a two stage approach. As stage 1, a mapping of the local GMSM communities was con- ducted to enlist local gay community groups, networks and organizations. The mapping of gay communities in Melbourne, VIC, was conducted as a separate study in 2009 [38] and other mapping exercises were conducted in Sydney, NSW and Perth, WA at the start of the CON- NECT study in 2010, in preparation to the RDS recruit- ment. The mapping of gay communities in the three study sites has p rovided information to be tter understand the size, local context and structure of GMSM groups and networks. It also served as a preparation for further RDS recruitment of study participants in stage 2. Based on the results of the mapping, primary RDS participants are selected to start recruitment in various community groups and venues. 2.4. Data Collection Each of the primary participants completes the study survey and receives up to three referral coupons with unique ID numbers to refer only up to three peers to the study. They are asked to invite their friends and/or sex partners and receive a referral coupon with a unique identifying number for each of the referrals. The coupons also contain detail information on how prospective par- ticipants can contact the study recruitment officer in their respective research site and enro l into the study. To increase awareness about the study, it is promoted in local GMSM community press, community organisa- tions and in the popular local GMSM community venues identified during the mapping stage. Incentives, accord- ing to previous research, have be en essential to maximise referrals for data collection efficiency [39]. However, this study does not use the individual incentive for each participant as our pilot study showed it would not be necessary and would not have an effect on recruitment. Instead, to encourage long wave recruitment, a substan- tial prize is offered to a winner of a lottery among the participants of the larg est recruitment wave. Recruitment and data collection is conducted by trained data collection officers (DCOs, one per each re- search site). Confidentiality is ensured by using 1) de- linked data collection; 2) self-administered online ques- tionnaire developed in Survey Gizmo, with password protected access to the dataset available only to the study project manager; 3) unique study identifying numbers Open Access WJA
Protocol for a Respondent-Driven Sampling Study Exploring the Roles of Peer Norms in HIV-Related Practices of Gay Men 323 based on the study referral process rather than personal identifying information; 4) encrypted data storage on secure computers; and 5) adequate training of all project personnel. We have further developed the recruitment method by using unique electronic referral coupons is- sued by DCOs, which participants could share with their referrals online. Data are collected using a standard structured ques- tionnaire about 30 - 40 minutes long which covers a broad range of HIV/STI related issues (see insert 1 for more detail). To our knowledge this is the first RDS recruitment study which utilizes both online recruitment directed by project officers and online data collection. Insert 1. Content of the CONNECT online ques- tionnaire: Section I. Personal information: socio-demogra- phics; sexual practices in the last 6 months with re- gular and casual sex partners, HIV disclosure; details of the recent sexual encounters, drug use; HVI/STI testing practices, attachment to gay community; size of personal network. Section II. HIV status and STI incidence will be self-reported. We recognise the importance of sero- status verification, but the use of self-reported sero- status in this study is justifiable for two reasons: 1) this study is focused on GMSM behaviours, and these are determined by what individuals know or believe to be their serostatus; 2) our previous work shows a high prevalence and frequency of HIV testing and a high correlation between self-reported and actual se- rostatus among Australian GMSM [40]. Very few men in this study would indeed be HIV positive while not knowing it; thus, the high cost of HIV test- ing and counselling for the total sample would not be justified in this particular project. Section III. Information about the referee: type of connection (social or sexual), sexual relationship if any (regular or casual partner), closeness of connec- tion (how often they have been meeting in the past 6 months and in what circumstances), discussion of HIV and risk reduction strategies, perception of the contacts’ expectations of how the respondent should act (subjective norms) and perceptions of HIV/STI risk and risk reduction behaviour of the contacts (de- scriptive norms). Section IV. Community-level information: sub- jective and descriptive norms and beliefs about HIV/ STI risk and risk reduction practices; perceptions of the knowledge about and attitudes towards HIV pre- vention methods, and barriers to safe sex practices in their respective personal netwo rks and communities. 2.5. Data Analyses Quantitative data collected by this study will be analysed using RDS analytic methods [41] as well as conventional statistical methods. Analyses will be carried out in sev- eral directions. First, a significant body of behavioural research and surveillance has already been developed in Australia, and time-location sampling has been widely used for recruitment of gay men. This is the first study to use RDS methodology in Australian gay communities. Therefore, the sample obtained by RDS recruitment will be thoroughly compared to samples from behavioural surveillance surveys and other studies to assess its repre- sentativeness and additive value for research among gay men. Second, the main focus of this study is to explore the understanding of behavioural norms in gay communities and the effect of norms on sexual practices of individuals. As behaviours of individuals are not independent, analy- ses will explore the connections between individuals, their environment (that is their personal networks) and the shared understanding of norms and behaviours within these networks. Furthermore, they will focus on the shared understanding of norms and how these are trans- lated into self-reported sexual and other practices associ- ated with HIV/STI transmission. Analyses will also be conducted on the extent of concordance in perceived behavioural norms within dyads of participants con- nected by recruitment (some of these being sex partners). As a measure of diffusion of norms through the referral chains, the concordance in perceived behavioural norms will also be explored according to the degree of distance between participants within the chain of referral (direct connection, separated by one, two or more persons in the referral chains). Third, one of the focuses of this study is on the com- parison of individual-level behaviours and community- level behavioural norms across geographically distinct communities of gay men. Comparisons will be drawn across three Australian states involved in this research to elucidate the effect of local community norms on behav- iour. This will contribute to the understanding of how local behavioural norms with respect to HIV risk and risk reduction are shaped. 2.6. Ethics The study procedures have been approved by the Human Research Ethics Committees of the two participating Universities (University of New South Wales, Sydney and Curtin University, Perth, SA), as well as by key gay community organizations in each of the three research sites (AIDS Councils of NSW, Victoria and Western Australia). Significant effort was placed at the stage of the study design to ensure that the process of peer-refer- Open Access WJA
Protocol for a Respondent-Driven Sampling Study Exploring the Roles of Peer Norms in HIV-Related Practices of Gay Men 324 ral is combined with participant anonymity and confi- dentiality of collected data. 3. Results Report on the study findings will be co-produced by the study advisory committee, whose membership represents the partnership of behavioural and social researchers, representatives of community organizations and policy makers from the Australian HIV sector. We previously reported the scarce research work as to the behavioural norms in gay communities. Better und erstanding of com- munity behavioural norms may inform the development of more effective HIV/STI prevention and education in- terventions. Therefore, the findings of this study, much anticipated by HIV prevention programs, will be dis- seminated not only to academic audiences, but also widely presented both locally and nationally, in commu- nity and public health forums. 4. Conclusion It is anticipated that the evidence collected by the CONNECT study will assist in improved targeting of HIV prevention and health promotion in Australia and elsewhere. We hope that this study will also contribute to the debate about the role of personal environment and broader community in shaping individual decision-mak- ing and practices which have bared on individual and community health. 5. Acknowledgements The authors would like to acknowledge the key commu- nity partners the AIDS Council of Western Australian, Victorian AIDS Council and AIDS Council of New South Wales, as well and PLWHA organizations in each state, for their support to this study and close involve- ment in the implementation of this study. 6. Contributors Iryna Zablotska, John de Wit, Graham Brown, Bruce Maycock, Christopher Fairley, Michelle McKechnie and Garrett Prestage assumed principal responsibility for the design and implementation of this study. All authors contributed to the preparation of and approved this pro- tocol manuscript. 7. Conflicts of Interest None were de clared. REFERENCES [1] HIV, “Viral Hepatitis and Sexually Transmissible Infec- tions in Australia,” Annual Surveillance Report 2010, The University of New South Wales, Sydney, 2010. [2] Australian Government Department of Health and Aging, “6th National HIV Strategy (2010-2013),” Australian Government Department of Health and Aging, Canberra, 2010. [3] R. J. Guy, A. McDonald, M. Bartlett, J. Murray, C. M. Giele, T. M. Davey, et al., “HIV Diagnoses in Australia: Diverging Epidemics within a Low-Prevalence Country,” Medical Journal of Australia, Vol. 187, No. 8, 2007, pp. 437-440. [4] N. MacDonald, S. Dougan, C. A. McGarrigle, K. Baster, B. D. Rice, B. G. Evans, et al., “Recent Trends in Diag- noses of HIV and Other Sexually Transmitted Infections in England and Wales among Men Who Have Sex with Men,” Sexually Transmitted Infections, Vol. 80, No. 6, 2004, pp. 492-497. http://dx.doi.org/10.1136/sti.2004.011197 [5] U. Marcus, L. Voss, C. Kollan and O. Hamouda, “HIV Incidence Increasing in MSM in Germany: Factors Influ- encing Infection Dynamics,” Eurosurveillance, Vol. 11, No. 9, 2006, pp. 157-160. [6] R. J. Wolitski, R. O. Valdiserri, P. H. Denning and W. C. Levine, “Are We Headed for a Resurgence of the HIV Epidemic among Men Who Have Sex with Men?” Ameri- can Journal of Public Health, Vol. 91, No. 6, 2001, pp. 883-888. http://dx.doi.org/10.2105/AJPH.91.6.883 [7] A. McDonald, “HIV/AIDS, Viral Hepatitis and Sexually Transmissible Infections in Australia: Annual Surveil- lance Report 2008,” Australian Institute of Health and Welfare, Canberra, 2008. [8] J. Elford, “Changing Patterns of Sexual Behaviour in the Era of Highly Active Antiretroviral Therapy,” Current Opinion in Infectious Diseases, Vol. 19, No. 1, 2006, pp. 26-32. http://dx.doi.org/10.1097/01.qco.0000199018.50451.e1 [9] N. Crepaz, T. A. Hart and G. Marks, “Highly Active An ti- retroviral Therapy and Sexual Risk Behavior: A Meta- Analytic Review,” JAMA, Vol. 292, No. 2, 2004, pp. 224- 236. http://dx.doi.org/10.1001/jama.292.2.224 [10] L. Mao, J. M. Cra wford, H. J. Hosper s, G. P. Prestage, A. E. Grulich, J. M. Kaldor, et al., “‘Serosorting’ in Casual Anal Sex of HIV-Negative Gay Men Is Noteworthy and Is Increasing in Sydney, Australia,” AIDS, Vol. 20, No. 8, 2006, pp. 1204-1206. http://dx.doi.org/10.1097/01.aids.0000226964.17966.75 [11] F. Jin, J. Crawford, G. P. Prestage, I. Zablotska, J. Imrie, S. C. Kippax, et al., “Unprotected Anal Intercourse, Risk Reduction Behaviours, and Subsequent HIV Infection in a Cohort of Homosexual Men,” AIDS, Vol. 23, No. 9, 2009, pp. 243-252. http://dx.doi.org/10.1097/QAD.0b013e32831fb51a [12] G. Prestage, J. Ferris, J. Grierson, R. Thorpe, I. Zablotska, J. Imrie, et al., “Homosexual Men in Australia: Popula- tion, Distribution and HIV Prevalence,” Sex Health, Vol. 5, No. 2, 2008, pp. 97-102. http://dx.doi.org/10.1071/SH07080 [13] I. B. Zablotska, G. Prestage, A. E. Grulich and J. Imrie, Open Access WJA
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