Faculty Profile

Thomas Valente

Thomas Valente, Ph.D.

Professor of Preventive Medicine


About Thomas Valente

Thomas W. Valente, PhD, is a Professor in the Department of Preventive Medicine, Institute for Prevention Research, Keck School of Medicine, University of Southern California. He is author of Social Networks and Health: Models, Methods, and Applications (2010, Oxford University Press);Evaluating Health Promotion Programs (2002, Oxford University Press); Network Models of the Diffusion of Innovations (1995, Hampton Press); and over 150 articles and chapters (as of June 2015) on social networks, behavior change, and program evaluation.Valente uses social network analysis, health communication, and mathematical models to implement and evaluate health promotion programs designed to prevent tobacco and substance abuse, unintended fertility, and STD/HIV infections. He is also engaged in mapping community coalitions and collaborations to improve health care delivery and reduce healthcare disparities.


Identifying student opinion leaders to lead e-cigarette interventions: protocol for a randomized controlled pragmatic trial
Trials. 2021 Jan 06; 22(1):31.

Examining the Role of Weight Status and Individual Attributes on Adolescent Social Relations
J Adolesc Health. 2020 Mar 11.

Diffusion/Contagion Processes on Social Networks
Health Educ Behav. 2020 Feb 24; 1090198120901497.

Gender Differences in Socio-ecological Determinants of Alcohol Use Among Hispanic Adolescents
J Sch Health. 2020 Feb; 90(2):99-106.

Evaluation of a Nurse-Delivered Pre-Chemotherapy Educational Intervention to Increase Knowledge and Reduce Anxiety Among Ethnically Diverse Patients
J Cancer Educ. 2020 Jan 30.

Corrigendum to "Network influences on policy implementation: Evidence from a global health treaty" [SocSci. Med. ] 222 (February 2019) 188-197.
Soc Sci Med. 2020 Jun 23; 112245.

Associations between network-level acculturation, individual-level acculturation, and substance use among Hispanic adolescents
J Ethn Subst Abuse. 2020 Jun 15; 1-18.

Algorithms and Health Misinformation: A Case Study of Vaccine Books on Amazon
J Health Commun. 2020 Jun 14; 1-8.

Human-centered design as a guide to intervention planning for non-communicable diseases: the BIGPIC study from Western Kenya
BMC Health Serv Res. 2020 May 12; 20(1):415.

Correction to: Human-centered design as a guide to intervention planning for non-communicable diseases: the BIGPIC study from Western Kenya
BMC Health Serv Res. 2020 Aug 12; 20(1):738.

A Pragmatic Randomized Controlled Trial to Increase Pre-Exposure Prophylaxis Uptake for HIV prevention: 55-week results from PrEPChicago
J Acquir Immune Defic Syndr. 2020 Oct 23.

Effects of parental presence during induction of anesthesia on operative and perioperative times in pediatric patients undergoing adenotonsillectomy
Int J Pediatr Otorhinolaryngol. 2020 Nov 19; 140:110515.

Implementation of a cluster randomized controlled trial: Identifying student peer leaders to lead E-cigarette interventions
Addict Behav. 2020 Nov 10; 114:106726.

Peer-adult network structure and suicide attempts in 38 high schools: implications for network-informed suicide prevention
J Child Psychol Psychiatry. 2019 Oct; 60(10):1065-1075.

Involving end-users in the design of an audit and feedback intervention in the emergency department setting - a mixed methods study
BMC Health Serv Res. 2019 Apr 29; 19(1):270.

Smoking Diffusion through Networks of Diverse, Urban American Adolescents over the High School Period
J Health Soc Behav. 2019 09; 60(3):362-376.

Perceived Social Acceptability and Longitudinal Trends in Adolescent Cigarette Smoking
Prev Sci. 2019 08; 20(6):824-832.

Network influences on policy implementation: Evidence from a global health treaty
Soc Sci Med. 2019 02; 222:188-197.

Overlooked Threats to Respondent Driven Sampling Estimators: Peer Recruitment Reality, Degree Measures, and Random Selection Assumption
AIDS Behav. 2018 Jul; 22(7):2340-2359.

"You See Yourself Like in a Mirror": The Effects of Internet-Mediated Personal Networks on Body Image and Eating Disorders
Health Commun. 2018 09; 33(9):1166-1176.

PrEP Chicago: A randomized controlled peer change agent intervention to promote the adoption of pre-exposure prophylaxis for HIV prevention among young Black men who have sex with men
Clin Trials. 2018 02; 15(1):44-52.

Diffusion of a Peer-Led Suicide Preventive Intervention Through School-Based Student Peer and Adult Networks
Front Psychiatry. 2018; 9:598.

Interpersonal communication regarding pregnancy-related services: friends versus health professionals as conduits for information
BMC Pregnancy Childbirth. 2018 04 12; 18(1):97.

Differences in time to injection onset by drug in California: Implications for the emerging heroin epidemic
Drug Alcohol Depend. 2018 04 01; 185:253-259.

Hygiene and Health: Who Do Mothers in Vanuatu Communicate with about Health?
Int J Environ Res Public Health. 2018 03 03; 15(3).

Coding communications across time: Documenting changes in interaction patterns across adopter categories
Netw Sci (Camb Univ Press). 2017 Dec; 5(4):441-460.

Bridging Income Generation with Group Integrated Care for cardiovascular risk reduction: Rationale and design of the BIGPIC study
Am Heart J. 2017 Jun; 188:175-185.

An Appraisal of Social Network Theory and Analysis as Applied to Public Health: Challenges and Opportunities
Annu Rev Public Health. 2017 Mar 20; 38:103-118.

Care coordination in epilepsy: Measuring neurologists' connectivity using social network analysis
Epilepsy Behav. 2017 08; 73:31-35.

An exploration of the Facebook social networks of smokers and non-smokers
PLoS One. 2017; 12(11):e0187332.

Adolescent Social Networks and Alcohol Use: Variability by Gender and Type
Subst Use Misuse. 2017 03 21; 52(4):477-487.

Popularity Breeds Contempt: The Evolution of Reputational Dislike Relations and Friendships in High School
Soc Networks. 2017 Jan; 48:100-109.

Putting the network in network interventions
Proc Natl Acad Sci U S A. 2017 09 05; 114(36):9500-9501.

J Community Psychol. 2016 Aug; 44(6):781-798.

Measuring sustainment of prevention programs and initiatives: a study protocol
Implement Sci. 2016 Jul 16; 11:95.

Diffusion of an Evidence-Based Smoking Cessation Intervention Through Facebook: A Randomized Controlled Trial
Am J Public Health. 2016 Jun; 106(6):1130-5.

Characterizing implementation strategies using a systems engineering survey and interview tool: a comparison across 10 prevention programs for drug abuse and HIV sexual risk behavior
Implement Sci. 2016 May 17; 11:70.

Increases in Network Ties Are Associated With Increased Cohesion Among Intervention Participants
Health Educ Behav. 2016 Apr; 43(2):208-16.

Bridging, brokerage and betweenness
Soc Networks. 2016 Jan; 44:202-208.

Hispanic/Latino Adolescents' Alcohol Use: Influence of Family Structure, Perceived Peer Norms, and Family Members' Alcohol Use
Am J Health Educ. 2016; 47(4):253-261.

A social network analysis of supportive interactions on prenatal sites
Digit Health. 2016 Jan-Dec; 2:2055207616628700.

Diffusion of innovations theory applied to global tobacco control treaty ratification
Soc Sci Med. 2015 Nov; 145:89-97.

Coevolution of Information Sharing and Implementation of Evidence-Based Practices Among North American Tobacco Cessation Quitlines
Am J Public Health. 2015 Sep; 105(9):1814-22.

Electronic Cigarette Marketing Online: a Multi-Site, Multi-Product Comparison
JMIR Public Health Surveill. 2015 Jul-Dec; 1(2):e11.

Place of Residence Moderates the Relationship Between Emotional Closeness and Syringe Sharing Among Injection Drug Using Clients of Sex Workers in the US-Mexico Border Region
AIDS Behav. 2015 Jun; 19(6):987-95.

How different countries addressed the sudden growth of e-cigarettes in an online tobacco control community
BMJ Open. 2015 May 21; 5(5):e007654.

Methods for measuring diffusion of a social media-based health intervention
Soc Netw. 2015 Apr; 4(2):41-46.

"Hidden" social networks in behavior change interventions
Am J Public Health. 2015 Mar; 105(3):513-6.

Peer leaders and substance use among high-risk adolescents
Subst Use Misuse. 2015 Feb; 50(3):283-91.

A Systematic Review of Loneliness and Smoking: Small Effects, Big Implications
Subst Use Misuse. 2015; 50(13):1697-716.

Multiplex congruity: friendship networks and perceived popularity as correlates of adolescent alcohol use
Soc Sci Med. 2015 Jan; 125:173-81.

A Social Network Analysis of a Coalition Initiative to Prevent Underage Drinking in Los Angeles County
Proc Annu Hawaii Int Conf Syst Sci. 2015 Jan; 2015:4356-4365.

It's better to give than to receive: the role of social support, trust, and participation on health-related social networking sites
J Health Commun. 2014 Dec; 19(12):1424-39.

Commentary--Project Towards No Drug Abuse: an evidence-based drug abuse prevention program
J Prim Prev. 2014 Aug; 35(4):233-7.

Peer influences: the impact of online and offline friendship networks on adolescent smoking and alcohol use
J Adolesc Health. 2014 May; 54(5):508-14.

Influence network linkages across implementation strategy conditions in a randomized controlled trial of two strategies for scaling up evidence-based practices in public youth-serving systems
Implement Sci. 2013 Nov 14; 8:133.

Alcohol peer influence of participating in organized school activities: a network approach
Health Psychol. 2013 Oct; 32(10):1084-92.

A computational future for preventing HIV in minority communities: how advanced technology can improve implementation of effective programs
J Acquir Immune Defic Syndr. 2013 Jun 01; 63 Suppl 1:S72-84.

Hawai'i's silent epidemic: children's caries (dental decay)
Hawaii J Med Public Health. 2013 Jun; 72(6):204-8.

A comparison of peer influence measures as predictors of smoking among predominately hispanic/latino high school adolescents
J Adolesc Health. 2013 Mar; 52(3):358-64.

Decomposing the components of friendship and friends' influence on adolescent drinking and smoking
J Adolesc Health. 2012 Aug; 51(2):136-43.

Network interventions
Science. 2012 Jul 06; 337(6090):49-53.

Partnerships for the design, conduct, and analysis of effectiveness, and implementation research: experiences of the prevention science and methodology group
Adm Policy Ment Health. 2012 Jul; 39(4):301-16.

Social integration in friendship networks: the synergy of network structure and peer influence in relation to cigarette smoking among high risk adolescents
Soc Sci Med. 2012 May; 74(9):1407-17.

A network method of measuring affiliation-based peer influence: assessing the influences of teammates' smoking on adolescent smoking
Child Dev. 2012 Mar-Apr; 83(2):442-51.

A network assessment of community-based participatory research: linking communities and universities to reduce cancer disparities
Am J Public Health. 2010 Jul; 100(7):1319-25.

Global tobacco control diffusion: the case of the framework convention on tobacco control
Am J Public Health. 2010 Jul; 100(7):1260-6.

Bridging: Locating Critical Connectors in a Network
Soc Networks. 2010 Jul 01; 32(3):212-220.

Place-based social network quality and correlates of substance use among urban adolescents
J Adolesc. 2010 Jun; 33(3):419-27.

Future health applications of genomics: priorities for communication, behavioral, and social sciences research
Am J Prev Med. 2010 May; 38(5):556-65.

Evaluation of an overdose prevention and response training programme for injection drug users in the Skid Row area of Los Angeles, CA
Int J Drug Policy. 2010 May; 21(3):186-93.

Adolescent affiliations and adiposity: a social network analysis of friendships and obesity
J Adolesc Health. 2009 Aug; 45(2):202-4.

Acculturation and substance use: social influence as a mediator among Hispanic alternative high school youth
J Health Soc Behav. 2009 Jun; 50(2):164-79.

Entertainment-education in a media-saturated environment: examining the impact of single and multiple exposures to breast cancer storylines on two popular medical dramas
J Health Commun. 2008 Dec; 13(8):808-23.

Collaboration and competition in a children's health initiative coalition: a network analysis
Eval Program Plann. 2008 Nov; 31(4):392-402.

Between tradition and change: condom use with primary sexual partners among Mexican migrants
AIDS Behav. 2008 Jul; 12(4):561-9.

How Correlated Are Network Centrality Measures?
Connect (Tor). 2008 Jan 01; 28(1):16-26.

Adolescent smoking networks: the effects of influence and selection on future smoking
Addict Behav. 2007 Dec; 32(12):3054-9.

Identifying opinion leaders to promote behavior change
Health Educ Behav. 2007 Dec; 34(6):881-96.

Network analysis of an organizational collaboration for Pacific Islander cancer control
J Health Care Poor Underserved. 2007 Nov; 18(4 Suppl):184-96.

Peer acceleration: effects of a social network tailored substance abuse prevention program among high-risk adolescents
Addiction. 2007 Nov; 102(11):1804-15.

Evaluating a Minor Storyline on ER About Teen Obesity, Hypertension, and 5 A Day
J Health Commun. 2007 Sep; 12(6):551-66.

Perceived peer influence and peer selection on adolescent smoking
Addict Behav. 2007 Aug; 32(8):1546-54.

Does entertainment-education work with Latinos in the United States? Identification and the effects of a telenovela breast cancer storyline.
J Health Commun. 2007 Jul-Aug; 12(5):455-69.

Differences in perceived implementation of a standard versus peer-led interactive substance abuse prevention program
Am J Health Behav. 2007 May-Jun; 31(3):297-311.

Community coalitions as a system: effects of network change on adoption of evidence-based substance abuse prevention
Am J Public Health. 2007 May; 97(5):880-6.

Opinion leader interventions in social networks
BMJ. 2006 Nov 25; 333(7578):1082-3.

Need, demand, and external validity in dissemination of physical activity programs
Am J Prev Med. 2006 Oct; 31(4 Suppl):S5-7.

Diffusion of innovations and network segmentation: the part played by people in promoting health
Sex Transm Dis. 2006 Jul; 33(7 Suppl):S23-31.

Promoting breastfeeding in Bolivia: do social networks add to the predictive value of traditional socioeconomic characteristics?
J Health Popul Nutr. 2006 Mar; 24(1):71-80.

Condom use and migration in a sample of Mexican migrants: potential for HIV/STI transmission
Salud Publica Mex. 2006 Jan-Feb; 48(1):57-61.

Peer influences on adolescent cigarette smoking: a theoretical review of the literature
Subst Use Misuse. 2006; 41(1):103-55.

Improving preventive health services training in chiropractic colleges: a pilot impact evaluation of the introduction of a model public health curriculum
J Manipulative Physiol Ther. 2005 Nov-Dec; 28(9):702-7.

Do popular students smoke? The association between popularity and smoking among middle school students.
J Adolesc Health. 2005 Oct; 37(4):323-9.

Intergenerational transfers of resources between older persons and extended kin in Taiwan and the Philippines
Popul Stud (Camb). 2005 Jul; 59(2):181-95.

Impact of sexual networks on risk for gonorrhea and chlamydia among low-income urban African American adolescents
J Pediatr. 2005 Apr; 146(4):518-22.

Characteristics of opinion leaders in substance abuse treatment agencies
Am J Drug Alcohol Abuse. 2004; 30(1):187-203.

Effects of a social-network method for group assignment strategies on peer-led tobacco prevention programs in schools
Am J Public Health. 2003 Nov; 93(11):1837-43.

Diffusion of innovations
Genet Med. 2003 Mar-Apr; 5(2):69.

Assessment of reference values for mercury in urine: the results of an Italian polycentric study
Sci Total Environ. 2002 Apr 22; 289(1-3):13-24.

Campaign exposure and interpersonal communication as factors in contraceptive use in Bolivia
J Health Commun. 2001 Oct-Dec; 6(4):303-22.

Interorganizational relationships among HIV/AIDS service organizations in Baltimore: a network analysis
J Urban Health. 2001 Sep; 78(3):468-87.

Peers, schools, and adolescent cigarette smoking
J Adolesc Health. 2001 Jul; 29(1):22-30.

Needle-exchange participation, effectiveness, and policy: syringe relay, gender, and the paradox of public health
J Urban Health. 2001 Jun; 78(2):340-9.

Selective risk taking among needle exchange participants: implications for supplemental interventions
Am J Public Health. 2001 Mar; 91(3):406-11.

An evaluation of the use of drama to communicate HIV/AIDS information
AIDS Educ Prev. 1999 Jun; 11(3):203-11.

Satellite exchange in the Baltimore Needle Exchange Program
Public Health Rep. 1998 Jun; 113 Suppl 1:90-6.

Matching the message to the process: the relative ordering of knowledge, attitudes, and practices in behavior change research
Hum Commun Res. 1998 Mar; 24(3):366-85.

Reproductive Health is in Your Hands: the national media campaign in Bolivia
SIECUS Rep. 1997 Jan; 25(2):10-3.

Mass-media-generated interpersonal communication as sources of information about family planning
J Health Commun. 1996 Jul-Sep; 1(3):247-65.

A Pragmatic Randomized Controlled Trial to Increase PrEP Uptake for HIV Prevention: 55-Week Results From PrEPChicago
J Acquir Immune Defic Syndr. 2021 Jan 01; 86(1):31-37.