A computer-assisted motivational social network intervention to reduce alcohol, drug and HIV risk behaviors among Housing First residents

David P Kennedy, Sarah B Hunter, Karen Chan Osilla, Ervant Maksabedian, Daniela Golinelli, Joan S Tucker, David P Kennedy, Sarah B Hunter, Karen Chan Osilla, Ervant Maksabedian, Daniela Golinelli, Joan S Tucker

Abstract

Background: Individuals transitioning from homelessness to housing face challenges to reducing alcohol, drug and HIV risk behaviors. To aid in this transition, this study developed and will test a computer-assisted intervention that delivers personalized social network feedback by an intervention facilitator trained in motivational interviewing (MI). The intervention goal is to enhance motivation to reduce high risk alcohol and other drug (AOD) use and reduce HIV risk behaviors.

Methods/design: In this Stage 1b pilot trial, 60 individuals that are transitioning from homelessness to housing will be randomly assigned to the intervention or control condition. The intervention condition consists of four biweekly social network sessions conducted using MI. AOD use and HIV risk behaviors will be monitored prior to and immediately following the intervention and compared to control participants' behaviors to explore whether the intervention was associated with any systematic changes in AOD use or HIV risk behaviors.

Discussion: Social network health interventions are an innovative approach for reducing future AOD use and HIV risk problems, but little is known about their feasibility, acceptability, and efficacy. The current study develops and pilot-tests a computer-assisted intervention that incorporates social network visualizations and MI techniques to reduce high risk AOD use and HIV behaviors among the formerly homeless. CLINICALTRIALS.

Gov identifier: NCT02140359.

Keywords: Alcohol and other drug use; Data visualization; EgoWeb; HIV risk behaviors; Homelessness; Housing First; Motivational interviewing; Social network intervention.

Figures

Fig. 1
Fig. 1
Study design and procedures
Fig. 2
Fig. 2
Hypothetical MNI participant network visualizations across two sessions. Each diagram demonstrates network members (“alters”) with circles (“nodes”) and lines (“edges”) connecting alters who have interacted with each other in the past 2 weeks. The left hand diagram (Session 1) depicts a network of ten nodes with two separate groups (“components”) and one network member who had no interactions with other alters (an “isolate”). One component in Session 1 is comprised of all AOD users and the other includes no AOD users. The right hand diagram shows that three of session 1 network members are no longer part of the network and three new members have been added to the network

References

    1. Wolitski RJ, Kidder DP, Fenton KA. HIV, homelessness, and public health: critical issues and a call for increased action. AIDS Behav. 2007;11(6):S167–S171. doi: 10.1007/s10461-007-9277-9.
    1. Fazel S, Khosla V, Doll H, Geddes J. The prevalence of mental disorders among the homeless in western countries: systematic review and meta-regression analysis. PLoS Med. 2008;5(12):e225. doi: 10.1371/journal.pmed.0050225.
    1. Allen DM, Lehman JS, Green TA, Lindegren ML, Onorato IM, Forrester W, et al. HIV-infection among homeless adults and runaway youth, United States, 1989–1992. AIDS. 1994;8(11):1593–1598. doi: 10.1097/00002030-199411000-00011.
    1. Culhane DP, Gollub E, Kuhn R, Shpaner M. The co-occurrence of AIDS and homelessness: results from the integration of administrative databases for AIDS surveillance and public shelter utilisation in philadelphia. J Epidemiol Community Health. 2001;55(7):515–520. doi: 10.1136/jech.55.7.515.
    1. Booth BM, Sullivan G, Koegel P, Burnam A. Vulnerability factors for homelessness associated with substance dependence in a community sample of homeless adults. Am J Drug Alcohol Abuse. 2002;28(3):429–452. doi: 10.1081/ADA-120006735.
    1. Rhoades H, Wenzel SL, Golinelli D, Tucker JS, Kennedy DP, Green HD, et al. The social context of homeless men’s substance use. Drug Alcohol Depend. 2011;118(2–3):320–325. doi: 10.1016/j.drugalcdep.2011.04.011.
    1. Tucker JS, Kennedy D, Ryan G, Wenzel SL, Golinelli D, Zazzali J. Homeless women’s personal networks: implications for understanding risk behavior. Hum Organ. 2009;68(2):129–140. doi: 10.17730/humo.68.2.m23375u1kn033518.
    1. Wenzel SL, Green HD, Tucker JS, Golinelli D, Kennedy DP, Ryan G, et al. The social context of homeless women’s alcohol and drug use. Drug Alcohol Depend. 2009;105(1–2):16–23. doi: 10.1016/j.drugalcdep.2009.05.026.
    1. Davey-Rothwell MA, Latimore A, Hulbert A, Latkin CA. Sexual networks and housing stability. J Urban Health Bull NY Acad Med. 2011;88(4):759–766. doi: 10.1007/s11524-011-9570-9.
    1. Robertson MJ, Clark RA, Charlebois ED, Tulsky J, Long HL, Bangsberg DR, et al. HIV seroprevalence among homeless and marginally housed adults in San Francisco. Am J Public Health. 2004;94(7):1207–1217. doi: 10.2105/AJPH.94.7.1207.
    1. Kidder DP, Wolitski RJ, Royal S, Aidala A, Courtenay-Quirk C, Holtgrave DR, et al. Access to housing as a structural intervention for homeless and unstably housed people living with HIV: rationale, methods, and implementation of the housing and health study. AIDS Behav. 2007;11(6):S149–S161. doi: 10.1007/s10461-007-9249-0.
    1. Milby JB, Schumacher JE, Wallace D, Vuchinich R, Mennemeyer ST, Kertesz SG. Effects of sustained abstinence among treated substance-abusing homeless persons on housing and employment. Am J Public Health. 2010;100(5):913–918. doi: 10.2105/AJPH.2008.152975.
    1. Milby JB, Schumacher JE, Wallace D, Freedman MJ, Vuchinich RE. To house or not to house: the effects of providing housing to homeless substance abusers in treatment. Am J Public Health. 2005;95(7):1259–1265. doi: 10.2105/AJPH.2004.039743.
    1. Milby JB, Schumacher JE, Vuchinich RE, Freedman MJ, Kertesz S, Wallace D. Toward cost-effective initial care for substance-abusing homeless. J Subst Abuse Treat. 2008;34(2):180–191. doi: 10.1016/j.jsat.2007.03.003.
    1. Kertesz SG, Crouch K, Milby JB, Cusimano RE, Schumacher JE. Housing first for homeless persons with active addiction: are we overreaching? Milbank Q. 2009;87(2):495–534. doi: 10.1111/j.1468-0009.2009.00565.x.
    1. Padgett DK. There’s no place like (a) home: ontological security among persons with serious mental illness in the United States. Soc Sci Med. 2007;64(9):1925–1936. doi: 10.1016/j.socscimed.2007.02.011.
    1. Padgett DK, Stanhope V, Henwood BF, Stefancic A. Substance use outcomes among homeless clients with serious mental illness: comparing housing first with treatment first programs. Community Ment Health J. 2011;47(2):227–232. doi: 10.1007/s10597-009-9283-7.
    1. Padgett DK, Gulcur L, Tsemberis S. Housing first services for people who are homeless with co-occurring serious mental illness and substance abuse. Res Soc Work Pract. 2006;16(1):74–83. doi: 10.1177/1049731505282593.
    1. Tsemberis S, Kent D, Respress C. Housing stability and recovery among chronically homeless persons with co-occurring disorders in Washington, DC. Am J Public Health. 2012;102(1):13–16. doi: 10.2105/AJPH.2011.300320.
    1. Larimer ME, Malone DK, Garner MD, Atkins DC, Burlingham B, Lonczak HS, et al. Health care and public service use and costs before and after provision of housing for chronically homeless persons with severe alcohol problems. JAMA. 2009;301(13):1349–1357. doi: 10.1001/jama.2009.414.
    1. Gladwell M. Million-dollar Murray: why problems like homelessness may be easier to solve than to manage. The New Yorker; 2006. . Accessed 7 Feb 2012.
    1. Graves F, Sayfan H. ‘Housing first,’ a radical new approach to ending chronic homelessness, is gaining ground in Boston. Boston Globe; 2007. . Accessed 30 Nov 2011.
    1. Whittaker E, Swift W, Flatau P, Dobbins T, Schollar-Root O, Burns L. A place to call home: study protocol for a longitudinal, mixed methods evaluation of two housing first adaptations in Sydney, Australia. BMC Public Health. 2015
    1. Valente TW. Network interventions. Science. 2012;337(6090):49–53. doi: 10.1126/science.1217330.
    1. Valente TW. Social networks and health. Models, methods, and applications. New York: Oxford University Press; 2010.
    1. Fisher JD. Possible effects of reference group-based social influence on AIDS risk behavior and AIDS prevention. Am Psychol. 1988;43(11):914–920. doi: 10.1037/0003-066X.43.11.914.
    1. Latkin C, Mandell W, Oziemkowska M, Celentano D, Vlahov D, Ensminger M, et al. Using social network analysis to study patterns of drug use among urban drug users at high risk for HIV/AIDS. Drug Alcohol Depend. 1995;38(1):1–9. doi: 10.1016/0376-8716(94)01082-V.
    1. Smith KP, Christakis NA. Social networks and health. Annu Rev Sociol. 2008;34:405–429. doi: 10.1146/annurev.soc.34.040507.134601.
    1. Berkman LF, Glass T, Brissette I, Seeman TE. From social integration to health: Durkheim in the new millennium. Soc Sci Med. 2000;51(6):843–857. doi: 10.1016/S0277-9536(00)00065-4.
    1. Reitzes DC, Crimmins TJ, Yarbrough J, Parker J. Social support and social network ties among the homeless in a downtown Atlanta park. J Community Psychol. 2011;39(3):274–291. doi: 10.1002/jcop.20431.
    1. Stablein T. Helping friends and the homeless milieu: social capital and the utility of street peers. J Contemp Ethnogr. 2011;40(3):290–317. doi: 10.1177/0891241610390365.
    1. Wolch JR, Rahimian A, Koegel P. Daily and periodic mobility patterns of the urban homeless. Prof Geogr. 1993;45(2):159–169. doi: 10.1111/j.0033-0124.1993.00159.x.
    1. Hawkins RL, Abrams C. Disappearing acts: the social networks of formerly homeless individuals with co-occurring disorders. Soc Sci Med. 2007;65(10):2031–2042. doi: 10.1016/j.socscimed.2007.06.019.
    1. Irwin J, LaGory M, Ritchey F, Fitzpatrick K. Social assets and mental distress among the homeless: exploring the roles of social support and other forms of social capital on depression. Soc Sci Med. 2008;67(12):1935–1943. doi: 10.1016/j.socscimed.2008.09.008.
    1. Padgett DK, Henwood B, Abrams C, Drake RE. Social relationships among persons who have experienced serious mental illness, substance abuse, and homelessness: implications for recovery. Am J Orthopsychiatry. 2008;78(3):333–339. doi: 10.1037/a0014155.
    1. Hwang SW, Kirst MJ, Chiu S, Tolomiczenko G, Kiss A, Cowan L, et al. Multidimensional social support and the health of homeless individuals. J Urban Health Bull NY Acad Med. 2009;86(5):791–803. doi: 10.1007/s11524-009-9388-x.
    1. Hwang SW, Tolomiczenko G, Kouyoumdjian FG, Garner RE. Interventions to improve the health of the homeless—a systematic review. Am J Prev Med. 2005;29(4):311–319. doi: 10.1016/j.amepre.2005.06.017.
    1. Zerger S, Strehlow AJ, Gundlapalli AV. Homeless young adults and behavioral health: an overview. Am Behav Sci . 2008;51(6):824–841. doi: 10.1177/0002764207311990.
    1. Johnson TP, Fendrich M. Homelessness and drug use—evidence from a community sample. Am J Prev Med. 2007;32(6):S211–S218. doi: 10.1016/j.amepre.2007.02.015.
    1. Brown RA, Kennedy DP, Tucker JS, Golinelli D, Wenzel SL. Monogamy on the street: a mixed methods study of homeless men. J Mixed Methods Res. 2013;7(4):328–346. doi: 10.1177/1558689813480000.
    1. Kennedy DP, Tucker JS, Green HD, Golinelli D, Ewing BA. Unprotected sex of homeless youth: results from a multilevel analysis of individual, social network, and relationship factors. AIDS Behav. 2012;16(7):2015–2032. doi: 10.1007/s10461-012-0195-0.
    1. Brown RA, Kennedy DP, Tucker JS, Wenzel S, Golinelli D, Wertheimer S, et al. Sex and relationships on the street: how homeless men judge partner risk on Skid Row. AIDS Behav. 2012;16(3):774–784. doi: 10.1007/s10461-011-9965-3.
    1. Kennedy DP, Wenzel SL, Tucker JS, Green HD, Golinelli D, Ryan GW, et al. Unprotected sex of homeless women living in Los Angeles county: an investigation of the multiple levels of risk. AIDS Behav. 2010;14(4):960–973. doi: 10.1007/s10461-009-9621-3.
    1. Green HD, Tucker JS, Golinelli D, Wenzel SL. Social networks, time homeless, and social support: a study of men on Skid Row. Netw Sci. 2013;1(03):305–320. doi: 10.1017/nws.2013.18.
    1. Kennedy DP, Green HD, McCarty C, Tucker JS. Nonexperts’ recognition of structure in personal network data. Field Methods. 2011;23(3):287–306. doi: 10.1177/1525822X11399702.
    1. Green HD, Tucker JS, Wenzel SL, Golinelli D, Kennedy DP, Ryan GW, Zhou AJ. Association of childhood abuse with homeless women’s social networks. Child Abus Negl. 2012;36(1):21–31. doi: 10.1016/j.chiabu.2011.07.005.
    1. Valente TW, Ritt-Olson A, Stacy A, Unger JB, Okamoto J, Sussman S. Peer acceleration: effects of a social network tailored substance abuse prevention program among high-risk adolescents. Addiction. 2007;102(11):1804–1815. doi: 10.1111/j.1360-0443.2007.01992.x.
    1. Valente TW, Hoffman BR, Ritt-Olson A, Lichtman K, Johnson CA. Effects of a social-network method for group assignment strategies on peer-led tobacco prevention programs in schools. Am J Public Health. 2003;93(11):1837–1843. doi: 10.2105/AJPH.93.11.1837.
    1. Centola D. The spread of behavior in an online social network experiment. Science. 2010
    1. Copello A, Orford J, Hodgson R, Tober G, Barrett C, Team UR. Social behaviour and network therapy—basic principles and early experiences. Addict Behav. 2002;27(3):345–366. doi: 10.1016/S0306-4603(01)00176-9.
    1. Bond J, Kaskutas LA, Weisner C. The persistent influence of social networks and alcoholics anonymous on abstinence. J Stud Alcohol. 2003;64(4):579–588. doi: 10.15288/jsa.2003.64.579.
    1. Litt MD, Kadden RM, Kabela-Cormier E, Petry N. Changing network support for drinking: initial findings from the network support project. J Consult Clin Psychol. 2007;75(4):542–555. doi: 10.1037/0022-006X.75.4.542.
    1. Litt MD, Kadden RM, Kabela-Cormier E, Petry NM. Changing network support for drinking: network support project 2-year follow-up. J Consult Clin Psychol. 2009;77(2):229–242. doi: 10.1037/a0015252.
    1. Groh DR, Jason LA, Keys CB. Social network variables in alcoholics anonymous: a literature review. Clin Psychol Rev. 2008;28(3):430–450. doi: 10.1016/j.cpr.2007.07.014.
    1. Kelly JF, Stout RL, Magill M, Tonigan JS. The role of alcoholics anonymous in mobilizing adaptive social network changes: a prospective lagged mediational analysis. Drug Alcohol Depend. 2011;114(2–3):119–126.
    1. Kaskutas LA, Bond J, Humphreys K. Social networks as mediators of the effect of alcoholics anonymous. Addiction. 2002;97(7):891–900. doi: 10.1046/j.1360-0443.2002.00118.x.
    1. Mason M, Pate P, Drapkin M, Sozinho K. Motivational interviewing integrated with social network counseling for female adolescents: a randomized pilot study in urban primary care. J Subst Abuse Treat. 2011;41(2):148–155. doi: 10.1016/j.jsat.2011.02.009.
    1. McCarty C, Molina JL, Aguilar C, Rota L. A comparison of social network mapping and personal network visualization. Field Methods. 2007;19(2):145–162. doi: 10.1177/1525822X06298592.
    1. Hogan B, Carrasco JA, Wellman B. Visualizing personal networks: working with participant-aided sociograms. Field Methods. 2007;19:116–144. doi: 10.1177/1525822X06298589.
    1. Luis Molina J, Maya-Jariego Luis Molina, McCarty C. Giving meaning to social networks: methodology for conducting and analyzing interviews based on personal network visualizations. In: Dominguez S, Hollstein B, editors. Mixed methods social networks research: design and applications. New York: Cambridge University Press; 2014. pp. 305–335.
    1. Rempel GR, Neufeld A, Kushner KE. Interactive use of genograms and ecomaps in family caregiving research. J Fam Nurs. 2007;13(4):403–419. doi: 10.1177/1074840707307917.
    1. Tracy EM, Whittaker JK. The social network map—assessing social support in clinical-practice. Fam Soc J Contemp Hum Serv. 1990;71(8):461–470.
    1. Yoon SA. Using social network graphs as visualization tools to influence peer selection decision-making strategies to access information about complex socioscientific issues. J Learn Sci. 2011;20(4):549–588. doi: 10.1080/10508406.2011.563655.
    1. Miller WR, Rose GS. Toward a theory of motivational interviewing. Am Psychol. 2009;64(6):527–537. doi: 10.1037/a0016830.
    1. Hettema J, Steele J, Miller WR. Motivational interviewing. Annu Rev Clin Psychol. 2005;1(1):91–111. doi: 10.1146/annurev.clinpsy.1.102803.143833.
    1. Bem DJ. Self-perception theory. In: Berkowitz L, editor. Advances in experimental social psychology. New York: Academic Press; 1972. pp. 1–62.
    1. Miller WR, Rollnick S. Motivational interviewing: preparing people for change. 2. New York: Guilford press; 2002.
    1. Marsch LA, Grabinski MJ, Bickel WK, Desrosiers A, Guarino H, Muehlbach B, et al. Computer-assisted HIV prevention for youth with substance use disorders. Subst Use Misuse. 2011;46(1):46–56. doi: 10.3109/10826084.2011.521088.
    1. Rounsaville BJ, Carroll KM, Onken LS. A stage model of behavioral therapies research: getting started and moving on from stage I. Clin Psychol Sci Pract. 2001;8(2):133–142. doi: 10.1093/clipsy.8.2.133.
    1. United States Interagency Council on Homelessness. Implementing housing first in permanent supportive housing. 2014. . Accessed 7 Aug 2015.
    1. Katzman R, Brown T, Fuld P, Peck A, Schechter R, Schimmel H. Validation of a short orientation–memory–concentration test of cognitive impairment. Am J Psychiatry. 1983;140(6):734–739. doi: 10.1176/ajp.140.6.734.
    1. Bradley KA, McDonell MB, Kivlahan DR, Diehr P, Fihn SD. The AUDIT alcohol consumption questions: reliability, validity and responsiveness to change in older male primary care patients. Alcohol Clin Exp Res. 1998;22(8):1842–1849.
    1. Cocco KM, Carey KB. Psychometric properties of the drug abuse screening test in psychiatric outpatients. Psychol Assess. 1998;10(4):408–414. doi: 10.1037/1040-3590.10.4.408.
    1. Maisto SA, Carey MP, Carey KB, Gordon CM, Gleason JR. Use of the AUDIT and the DAST-10 to identify alcohol and drug use disorders among adults with a severe and persistent mental illness. Psychol Assess. 2000;12(2):186–192. doi: 10.1037/1040-3590.12.2.186.
    1. Skinner HA. The drug abuse screening test. Addict Behav. 1982;7(4):363–371. doi: 10.1016/0306-4603(82)90005-3.
    1. de la Haye K, Green HD, Kennedy DP, Zhou A, Golinelli D, Wenzel SL, et al. Who is supporting homeless youth? Predictors of support in personal networks. J Res Adolesc. 2012
    1. Kennedy DP, Wenzel SL, Brown R, Tucker JS, Golinelli D. Unprotected sex among heterosexually active homeless men: results from a multi-level dyadic analysis. AIDS Behav. 2013;17(5):1655–1667. doi: 10.1007/s10461-012-0366-z.
    1. D’Amico EJ, Miles JNV, Stern SA, Meredith LS. Brief motivational interviewing for teens at risk of substance use consequences: a randomized pilot study in a primary care clinic. J Subst Abuse Treat. 2008;35:53–61. doi: 10.1016/j.jsat.2007.08.008.
    1. D’Amico EJ. Brief substance use intervention for primary care. Rockville: National Institute on Drug Abuse, National Institutes of Health; 2005.
    1. Osilla KC, D’Amico EJ, Díaz-Fuentes CM, Lara M, Watkins KE. Multicultural web-based motivational interviewing for clients with a first-time DUI offense. Cult Divers Ethn Minor Psychol. 2012;18(2):192–202. doi: 10.1037/a0027751.
    1. Hogue A, Dauber S, Morgenstern J. Validation of a contemplation ladder in an adult substance use disorder sample. Psychol Addict Behav. 2010;24(1):137–144. doi: 10.1037/a0017895.
    1. Bluthenthal RN, Gogineni A, Longshore D, Stein M. Factors associated with readiness to change drug use among needle-exchange users. Drug Alcohol Depend. 2001;62(3):225–230. doi: 10.1016/S0376-8716(00)00174-5.
    1. LaBrie JW, Quinlan T, Schiffman JE, Earleywine ME. Performance of alcohol and safer sex change rulers compared with Readiness To Change Questionnaires. Psychol Addict Behav. 2005;19(1):112–115. doi: 10.1037/0893-164X.19.1.112.
    1. Young AS, Niv N, Chinman M, Dixon L, Eisen SV, Fischer EP, et al. Routine outcomes monitoring to support improving care for schizophrenia: report from the VA Mental Health QUERI. Community Ment Health J. 2011;47(2):123–135. doi: 10.1007/s10597-010-9328-y.
    1. Donovan DM, Bigelow GE, Brigham GS, Carroll KM, Cohen AJ, Gardin JG, et al. Primary outcome indices in illicit drug dependence treatment research: systematic approach to selection and measurement of drug use end-points in clinical trials. Addiction. 2011
    1. Biener L, Abrams DB. The contemplation ladder: validation of a measure of readiness to consider smoking cessation. Health Psychol. 1991;10(5):360–365. doi: 10.1037/0278-6133.10.5.360.
    1. Steinberg ML, Ziedonis DM, Krejci JA, Brandon TH. Motivational interviewing with personalized feedback: a brief intervention for motivating smokers with schizophrenia to seek treatment for tobacco dependence. J Consult Clin Psychol. 2004;72(4):723–728. doi: 10.1037/0022-006X.72.4.723.
    1. Heather N, Rollnick S, Bell A. Predictive validity of the Readiness to Change Questionnaire. Addiction. 1993;88(12):1667–1677. doi: 10.1111/j.1360-0443.1993.tb02042.x.
    1. Heather N, Gold R, Rollnick S. Readiness to change questionnaire: user’s manual. Kensington: National Drug and Alcohol Research Centre; 1991.
    1. Rollnick S, Heather N, Gold R, Hall W. Development of a short readiness to change questionnaire for use in brief, opportunistic interventions among excessive drinkers. Br J Addict. 1992;87(5):743–754. doi: 10.1111/j.1360-0443.1992.tb02720.x.
    1. DiClemente CC, Carbonari JP, Montgomery RP, Hughes SO. The alcohol abstinence self-efficacy scale. J Stud Alcohol Drugs. 1994;55(2):141–148. doi: 10.15288/jsa.1994.55.141.
    1. Marin BV, Tschann JM, Gomez CA, Gregorich S. Self-efficacy to use condoms in unmarried Latino adults. Am J Community Psychol. 1998;26(1):53–71. doi: 10.1023/A:1021882107615.
    1. Kennedy DP, Wenzel SL, Brown R, Tucker JS, Golinelli D. Unprotected sex among heterosexually active homeless men: results from a multi-level dyadic analysis. AIDS Behav. 2013;17(5):1655–1667. doi: 10.1007/s10461-012-0366-z.
    1. Tucker JS, Wenzel SL, Golinelli D, Ryan G, Zhou A, Beckman R, et al. Is substance use a barrier to protected sex among homeless women? Results from between- and within-subjects event analyses. J Stud Alcohol Drugs. 2010;71(1):86–94. doi: 10.15288/jsad.2010.71.86.
    1. Wenzel SL, Tucker JS, Golinelli D, Green HD, Jr, Zhou A. Personal network correlates of alcohol, cigarette, and marijuana use among homeless youth. Drug Alcohol Depend. 2010;112(1–2):140–149. doi: 10.1016/j.drugalcdep.2010.06.004.
    1. Wenzel S, Holloway I, Golinelli D, Ewing B, Bowman R, Tucker J. Social networks of homeless youth in emerging adulthood. J Youth Adolesc. 2011. doi:10.1007/s10964-011-9709-8.
    1. Golinelli D, Ryan G, Green HD, Kennedy DP, Tucker JS, Wenzel SL. Sampling to reduce respondent burden in personal network studies and its effect on estimates of structural measures. Field Methods. 2010;22(3):217–230. doi: 10.1177/1525822X10370796.
    1. McCarty C, Killworth PD, Rennell J. Impact of methods for reducing respondent burden on personal network structural measures. Soc Netw. 2007;29(2):300–315. doi: 10.1016/j.socnet.2006.12.005.
    1. Longabaugh R, Wirtz PW, Zywiak WH, O’Malley SS. Network support as a prognostic indicator of drinking outcomes: the COMBINE Study. J Stud Alcohol Drugs. 2010;71(6):837–846. doi: 10.15288/jsad.2010.71.837.
    1. Zywiak WH, Neighbors CJ, Martin RA, Johnson JE, Eaton CA, Rohsenow DJ. The important people drug and alcohol interview: psychometric properties, predictive validity, and implications for treatment. J Subst Abuse Treat. 2009;36(3):321–330. doi: 10.1016/j.jsat.2008.08.001.
    1. Papp LM, Witt NL. Romantic partners’ individual coping strategies and dyadic coping: implications for relationship functioning. J Fam Psychol. 2010;24(5):551–559. doi: 10.1037/a0020836.
    1. Thomas OH. Measuring excessive alcohol use in college drinking contexts: the Drinking Context Scale. Addict Behav. 1997;22(4):469–477. doi: 10.1016/S0306-4603(96)00050-0.
    1. Kennedy DP, Brown R, Golinelli D, Wenzel S, Tucker JS, Wertheimer S. Masculinity and HIV risk among homeless men in Los Angeles. Psychol Men Masc. 2012. doi:10.1037/a0027570.
    1. McCarty C. Measuring structure in personal networks. J Soc Struct. 2002.
    1. Wasserman S, Faust K. Social network analysis: methods and applications. New York: Cambridge University Press; 1994.
    1. Marlatt GA, Baer JS, Kivlahan DR, Dimeff LA, Larimer ME, Quigley LA, et al. Screening and brief intervention for high-risk college student drinkers: results from a 2-year follow-up assessment. J Consult Clin Psychol. 1998;66(4):604–615. doi: 10.1037/0022-006X.66.4.604.
    1. D’Amico EJ, Osilla KC, Hunter SB. Developing a group motivational interviewing intervention for adolescents at-risk for developing an alcohol or drug use disorder. Alcohol Treat Q. 2010;28(4):417–436. doi: 10.1080/07347324.2010.511076.
    1. Osilla KC, Zellmer SP, Larimer ME, Neighbors C, Marlatt GA. A brief intervention for at-risk drinking in an employee assistance program. J Stud Alcohol Drugs. 2008;69(1):14–20. doi: 10.15288/jsad.2008.69.14.
    1. Hewitt CE, Torgerson DJ, Miles JNV. Is there another way to take account of noncompliance in randomised trials? Can Med Assoc J. 2006;175:347–348. doi: 10.1503/cmaj.051625.
    1. Donald SG, Lang K. Inference with difference-in-differences and other panel data. Rev Econ Stat. 2007;89(2):221–233. doi: 10.1162/rest.89.2.221.
    1. Yang L, Tsiatis AA. Efficiency study of estimators for a treatment effect in a pretest-posttest trial. Am Stat. 2001;55(4):314–321. doi: 10.1198/000313001753272466.

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