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James M. McMahon, PhD
James M. McMahon, PhD

Bio

For more than two decades, James McMahon has conducted community-based, public health research in low-income underserved neighborhoods in New York City. His work centers on the confluence of behavioral, social, and epidemiological factors that contribute to the spread of HIV and Hepatitis C in marginalized populations, with an emphasis on the implementation of biomedical interventions for disease prevention in social and community context.

The scope of McMahon’s research—often involving scientists from across the country—has made him one of the top HIV/AIDS investigators in the nation working to tackle the disease collaboratively from multiple research fronts: from basic behavioral and epidemiological science to randomized trials of prevention interventions. His research and expertise are reflected in three ongoing lines of investigation: (1) the development of public health programs designed to prevent the spread of HIV among minority women and heterosexual couples, with a focus on HIV pre-exposure prophylaxis (PrEP), (2) understanding how the Hepatitis C virus is spread among noninjecting drug-users, and (3) the advancement of biostatistical methods applied to epidemiology. McMahon’s most recent NIH-funded study explores optimal implementation strategies to reduce the risk of HIV/AIDS transmission among heterosexual couples of mixed HIV status through pre-exposure prophylaxis (PrEP).

McMahon is co-founder and chair of the SON Interdisciplinary Sexual Health and HIV Research group. He also has a secondary faculty appointment in the Department of Public Health Science, School of Medicine and Dentistry, and is Co-Director of the Clinical and Translational Science Core in the University of Rochester Center for AIDS Research.  McMahon teaches applied statistics in the PhD program in the School of Nursing. He earned his bachelor’s from the University of Winnipeg and his PhD from the City University of New York.

Areas of Expertise

  • Care Strategies : Behavioral Change
  • Care Strategies : Relationships / Caring
  • Level of Care : Prevention
  • Level of Care : Public Health - Epidemiology
  • Populations : Adults
  • Populations : Men
  • Populations : Women
  • Theoretical Interests : Bio-Psycho-Social
  • Theoretical Interests : Social / Physical Environmental

Professional Experience
Associate Professor (Secondary Appointment), UR Department of Public Health Science, Rochester, NY, US. 2017 - Current

Associate Professor, UR School of Nursing, Rochester, NY, US. 2007 - Current

Senior Research Scientist, National Development & Research Institutes, New York, NY, US. 2003 - 2007

Research Scientist, National Development & Research Institutes, New York, NY, US. 2001 - 2003

Project Director, National Development and Research Institutes (NDRI), New York, NY, US. 1999 - 2001

Principal Research Associate/Data Analyst, National Development and Research Institutes (NDRI), New York, NY, US. 1996 - 1999

Research Assistant, Hunter College (Hard Tissue Research), New York, NY, US. 1994 - 1996

Statistical Consultant/SAS Coordinator, Academic Computing Services CUNY (Academic Computing), New York, NY, US. 1991 - 1996

Adjunct Lecturer, Department of Biology Hunter College (Biology), New York, NY, US. 1990 - 1996

Adjunct Lecturer, Lehman College (Anthropology), New York, NY, US. 1992 - 1995

Research Assistant, CCNY Medical School, City College, New York, NY, US. 1989 - 1990

Awards
R01 Grant Award for title: PrEP Implementation and US HIV-serodiscordant couples:  Couple PrEP Demo Project
National Institute of Health, 2015

NINH
National Institute of Mental Health, 2014

Josephine Craytor Nursing Faculty Award
UR School of Nursing, 2011

Medical Center Leadership Series
UR Medical Center, 2010

Master's Program for Clinical Research Coordinator Degree Program Grant
UR Clinical and Translational Science Institute, 2009

Outstanding Faculty Colleague
University of Rochester School of Nursing, 2008

Graduate Fellowship Award
University of New York, 1988

Presentations
Self-management in long-term urinary catheter users
46th Annual Conference, WOCN Society's, 2015
Nashville, Tennessee

A randomized clinical trial of self-management of urine flow in long-term indwelling urinary catheter users
Annual Meeting, International Continence Society, 2014
Rio De Janeiro, Brazil

Randomized trial of self-management of urine flow in long-term indwelling catheter users
2014 State of the Science Congress on Nursing Research, The Council for the Advancement of Nursing Science, 2014
Washington, District Of Columbia

A new urinary catheter self-management scale (C-SMG)
43 International Continence Society Meeting, 2013
Barcelona, Spain

A new urinary catheter self-efficacy scale (C-SE)
43 International Continence Society Meeting, 2013
Barcelona, Spain

Revised indwelling urinary catheter-related quality of life instrument (I-Cqo12)
42 International Continence Society Meeting, 2012
Beijing, China

HIV counseling and testing for high risk couples in New York City.
HIV Prevention Research in Minority Communities, Training Program Seminar, Center for HIV Preventin Studies, University of California, 2010
San Francisco, California

Challenges and solutions to recruiting sexual partners in HIV prevention research
HIV Prevention Research in Minority Communities, Training Program Seminar, Center for HIV Prevention Studies, University of California, 2010
San Francisco, California

Why are IDU couples hard to treat and what can we do about it?
8th National Harm Reduction Conference, 2010
Austin, Texas

Injection initiation in intimate partnerships: intervention strategies for addiction specialists
Addiction Health Services Research Conference, 2010
Lexington, Kentucky

Bringing couples together: HIV counseling and testing for high risk couples in New York City
HIV Prevention Research in Minority Communities, 2010
San Francisco, California

Challenges and solutions to recruiting sexual partners in HIV prevention research
HIV Prevention Research in Minority Communities, 2010
San Francisco, California

Socio-structural barriers to treatment and treatment-based HIV prevention among IDU couples in NYC
Poster Presentation at the North American Housing and HIV Research Summit V, 2010
Toronto, Canada

Bringing couples together: HIV counseling and testing for high risk couples in New York City.
Institute for the Family, 2010
Rochester, New York

Prospective study of long-term urinary catheter use.
International Continence Society Conference, 2009
San Francisco, California

A new catheter-related quality of life instrument for long-term urinary catheter users
International Continence Society Conference, 2009
San Francisco, California

Emergent properties of HIV risk among IDUs in Tallinn, Estonia: synthesis of individual, network, and neighborhood-level factors
18th Epidemiology and Preventiom of STDs: The Role of Emergent Properties and Structural Patterns Mtg, 2009
London, England

Modeling of HIV Transmission on Three Intercourse Networks: Implications for Evaluating Prevention Strategies
16th HIV Dynamics & Evolution Meeting, 2009
Oxford, England

Rural Haitian women's knowledge, beliefs and attitudes about HIV/STIs
11th Annual Research & Leadership Conference, 2008
Rochester, New York

The unresolved epidemic: unexplained cases of Hepatitis C in New York City
Mount Sinai Medical Center, School of Medicine, 2007
New York, New York

Risk for viral hepatitis C among noninjection drug users
Beth Israel Medical Center, Division of Infectious Diseases, 2007
New York, New York

A multilevel dyadic modeling technique to assess risk factors for hepatitis C infection among heterosexual couples.
New Methods for the Analysis of Family and Dyadic Processes Conference, New Methods for the Analysis of Family and Dyadic Processes, 2006
Amherst, Massachusetts

Low income, minority women drug users: intimate relationships and risk for HIV.
133rd Annual Meeting of the American Public Health Association, American Public Health Association, 2005
Philadelphia, Pennsylvania

The changing face of AIDS: why are more and more women becoming infected?
St. Anne's Corner of Harm Reduction, 2005
Bronx, New York

Women's HIV risk from intimate male partners: a global perspective. New York City Department of Health and Mental Hygiene
Public Health Library Seminar Series, Department of Health and Mental Hygiene, 2005
New York, New York

Intimate partner violence and HIV risk among drug using women in East Harlem.
Third International Conference on Urban Health, International Conference on Urban Health, 2004
Boston, Massachusetts

Increased sexual risk behavior and high HIV seroincidence among drug-using low-income women with primary heterosexual partners.
XV International AIDS Conference, International AIDS Conference, 2004
Bangkok, Thailand

HIV-infected,low income drug users: relationship dynamics, sexual risk, and quality of life.
XV International AIDS Conference, XV International AIDS Conference, 2004
Bangkok, Thailand

The impact of relationship dynamics on women's HIV risk and prevention.
Center for Drug Use and HIV Research, 2004
New York, New York

Social and drug-use indicators and consistent condom use with sex exchange partners among women in East Harlem, New York.
66th Annual Scientific Meeting of the College on Problems of Drug Dependence, College on Problems of Drug Dependence, 2004
San Juan, China

Estimated impact of sexual transmission of hepatitis C virus on HCV epidemiology based on mathematical modeling of drug-using women's disease risk.
National STD Prevention Conference, 2004
Philadelphia, Pennsylvania

"She said, he said": Drug-using women's perceived versus actual HIV risk from primary male partners.
131st Annual Meeting of the American Public Health Association, American Public Health Association, 2003
San Francisco, California

Impact of the New York State Expanded Syringe Access Demonstration Program on receptive syringe sharing among injection drug users in Harlem and the Bronx
National HIV Prevention Conference, 2003
Atlanta, Georgia

Hepatitis C Infection among "never injectors":possible route of transmission.
Conference, Health Services Research Among Hard-to-Reach Populations, 2002
Key Largo, Florida

Relationship dynamics and disease risk among drug-using women and their primary male sex partners in New York City.
XIV International AIDS Conference, XIV International AIDS, 2002
Barcelona, Spain

Evaluation of HIV intervention scenarios targeted to drug-using women from East Harlem: a Monte Carlo simulation approach. National Institute on Drug Abuse Conference on Strategies to Improve the Replicability, Sustainability, and Durability of HIV Prevention Interventions for Drug-Users.
National Institute on Drug Abuse Conference on Strategies to Improve the Replicability, Sustainability, and Durability of HIV Prevention Interventions for Drug-Users, 2002
Washington, District Of Columbia

Women drug injectors and the social ecology of HIV risk.
American Psychological Association, 2002
Washington, District Of Columbia

The dynamics of disease risk in drug-using women's primary sexual relationships.
63rd Annual Scientific Meeting of The College on Problems of Drug Dependence, 2001
Scottdale, Arizona

Contextual factors and women's injection risk in East Harlem, NY: an event analysis
XIII International AIDS Conference, AIDS Conference, 2000
Durban, South Africa

Drug-using women's HIV sexual risk behavior within main partner relationships.
128th Annual Meeting of American Public Health Association, American Public Health Association, 2000
Boston, Massachusetts

The Social Ecology of exchanging sex for drugs or money in East Harlem, NYC: An event analysis focused on women drug users.
AIDS Impact Conference, AIDS Impact Conference, 1999
Ottawa, Canada

A Profile of drug-using women living with HIV/AIDS in East Harlem, NY: demographics, social support, and health practices.
AIDS Impact Conference, AIDS Impact Conference, 1999
Ottawa, Canada

Predictors of Hepatitis C among drug using women in East Harlem, NYC:
61st Annual Scientific Meeting of the College on Problems of Drug Dependence., College on Problems of Drug Dependence, 1999
Acapulco, Mexico

The social ecology of drug using women's sexual risk in East Harlem, NYC: an event analysis
AIDS Conference, XII International AIDS Conference, 1998
Geneva, Switzerland

Contraceptive Practices among women at high risk for HIV infection.
126th Annual Meeting, American Public Health Association, 1998
Washington DC, District Of Columbia

Sexual risk behavior and condom use among women at high risk for HIV infection
126th Annual Meeting, American Public Health Association, 1998
Washington, District Of Columbia

Beliefs about condoms and condom use among drug users.
60th Annual Scientific Meeting, College on Problems of Drug Dependence, 1998
Phoenix, Arizona

Paleopathology and reconstruction of EH-1470
65th Annual Meetings of the American Association of Physical Anthropology, 1996
Durham, North Carolina

Developmental constraints on craniofacial morphology: the effects of ethmoid orientation on facial projection
63rd Annual Meetings of the American Association of Physical Anthropology, 1994
Denver, Colorado

The science and peri-science of craniofacial form.
New York Consortium of Evolutionary Primatology, 1993
New York, New York

Ontogenetic and functional-adaptive factors influencing primate skull design
NATO Advanced Study Institute on Advances in Morphometrics, 1993
II Ciocco, Italy

Hominoid craniofacial growth: cellular activity and morphological change
12th Leeds Statistical Research Workshop, 1992
Leeds, England

Biomechanical and ultra-structural properties of bone.
City University of New York Seminar Series, 1990
New York, New York

Limitations and misapplications of stable carbon isotope analysis in paleodietary reconstructions
City University of New York Seminar Series, 1988
New York, New York

Publications
Chimenti, R. E. Flemister, A. S., Tome, J., McMahon, J. M., Houck, J. R. (n.d.). Differences in ankle biomechanics as opposed to strength and range of motion.. Journal of Orthopaedic and Sports Physical Therapy..

Uuskula A., McMahon J.M., Kals M., Talu A., Abel-Ollo K., Ruutel K., McNutt L.A., Des Jarlais D.C. (n.d.). High risk for heterosexual transmission of HIV among non-injecting female partners of injection drug users in Estonia. AIDS & Behavior.

Braksmajer A, Fedor TM, Chen SR, Corales R, Holt S, Valenti W, McMahon JM (2018). Willingness to Take PrEP for HIV Prevention: The Combined Effects of Race/Ethnicity and Provider Trust. AIDS Educ Prev, 30 (1), 1-12. PMID: 29481300 DOI: 10.1521/aeap.2018.30.1.1

Morse, DS; Wilson, JL; McMahon, JM; Dozier, AM; Quiroz A; Cerulli, C. (2017). Does a primary health clinic for formerly incarcerated women increase linkage to care?. Womens Health Issues, 27 (4), 499-508.

Wilde, M.H., McMahon, J.M., Crean, H.F., Brasch, J. (2017). Exploring relationships of catheter-associated urinary tract infection and blockage in people with long-term indwelling urinary catheters. .

Fedor, TM; Kohler, HP; McMahon, JM (2016). Changing attitudes and beliefs towards a woman's right to protect against HIV risk in Malawi. CULTURE HEALTH & SEXUALITY, 18 (4), 435-452.

Kamen C, Heckler C, Janelsins MC, Peppone LJ, McMahon JM, Morrow GR, et al (2016). A Dyadic exercise intervention to reduce psychological distress among lesbian, gay, and heterosexual cancer survivors. LGBT Health (4), 52-64.

Wilde, MH; McMahon, JM; Tang, W; McDonald, MV; Brasch, J; Fairbanks, E; Shah, S (2016). Self-Care management questionnaire for long-term indwelling urinary catheter users. NEUROUROLOGY AND URODYNAMICS, 35 (4), 492-496.

Shah, K. N., Majeed, Z., Yoruk, Y. B., Yang, H., Hilton, T. N., McMahon, J. M., Hall, W. J., Walck, D., Luque, A. E., Ryan, R. M. (2016). Enhancing physical function in HIV-infected older adults: A randomized controlled clinical trial.. Health Psychology, 35 (6), 563-573.

Braksmajer, AmySenn, Theresa E.McMahon, James (2016). The Potential of Pre-Exposure Prophylaxis for Women in Violent Relationships.. AIDS Patient Care & STDs, 30 (6), 274-287.

Chimenti RL, Flemister AS, Tome J, McMahon JM, Houck JR. (2016). Patients With Insertional Achilles Tendinopathy Exhibit Differences in Ankle Biomechanics as Opposed to Strength and Range of Motion. J Orthop Sports Phys Ther, 46 (12), 1051-1060.

Chimenti, R.L., Flemister, A.S., Tome, J., McMahon, J.M., Houck, J.R. (2016). NPatients with Insertional Achilles Tendinopathy Exhibit Differences in Ankle Biomechanics as Opposed to Strength and Range of Motion. Journal of Orthopaedic & Sports Physical Therapy, 46 (12), 1051-1060.

Wilde, MH; Crean, HF; McMahon, JM; McDonald, MV; Tang, W; Brasch, J; Fairbanks, E; Shah, S; Zhang, F (2016). Testing a Model of Self-Management of Fluid Intake in Community-Residing Long-term Indwelling Urinary Catheter Users. Nursing Research, 65 (2), 97-106.

Shah, K.N., Lin, F.V., Yu, F., McMahon, J.M. (2016). Activity engagement and physical function in old age sample. , 69, 55-60.

Wilde, M.H. McMahon, J.M. Fairbanks, E. Brasch, J. Parshall, R. Zhang, F. Miner, S. Thayer, D. Schneiderman, D. Harrington, B. (2016). Feasibility of a Web-Based Self-management Intervention for Intermittent Urinary Catheter Users With Spinal Cord Injury. , 43 (5), 529-538.

McMahon, J.M., Volpe E.M., Klostermann, K., Trabold, N., Xue, Y. (2015). A Systematic Review of the Psychometric Properties of the Sexual Relationship Power Scale in HIV/AIDS Research. Archives of Sexual Behavior, 44 (2), 267-94.

Wilde, M.H., McMahon, J.M., McDonald, M.V., Tang, W., Wang, W., Brasch, J., Fairbanks, E., Shah, S., Zhang, F., & Chen, D. (2015). Self-management intervention for long-term indwelling urinary catheter users: randomized clinical trial. Nursing Research, 64 (1), 24-34.

Wilde, M.H., Fairbanks, E., Parshall, B., Zhang, F., Miner, S., Thayer, D., Harrington, B., Brasch, J., McMahon, J.M. (2015). Development of a web-based self-management intervention for intermittent urinary catheter users with spinal cord injury. Computers, Informatics, Nursing, 33 (11), 478-486.

Wilde, M. H., Fairbanks, E., Shivani, S., Wilson, P., Lash, M., McDonald, M. V., Brasch, J., Zhang, F., Scheid, E., McMahon, J. M., Liebel, D. (2015). A hybrid process fidelity assessment in a home-based randomized clinical trial.. Home Health Care Services Quarterly, 34 (2), 113-136.

Wilde, M. H., Fairbanks, E., Parshall, R., Zhang, F., Miner, S., Thayer, D., Harrington, B., Brasch, J., Schneiderman, D., McMahon, J. M. (2015). A web-based self-management intervention for intermittent catheter users.. Journal of Urological Nursing, 35 (3), 127-133.

Kamen C, Mustian KM, Heckler C, Janelsins MC, Peppone LJ, Mohile S, McMahon JM, et al (2015). The association between partner support and psychological distress among prostate cancer survivors in a nationwide study. J Cancer Surviv (9), 492-499.

Shah, K; McMahon, JM; Trabold, N; Aidala, AA; Chen, M; Pouget, ER; Simmons, J; Klostermann, K (2015). Determinants of physical and global functioning in adult HIV-positive heterosexual men. AIDS CARE-PSYCHOLOGICAL AND SOCIO-MEDICAL ASPECTS OF AIDS/HIV, 27 (9), 1079-1086.

McMahon JM, Chimenti R, Trabold N, Fedor T, Mittal M, Tortu S (2015). Risk of Intimate Partner Violence and Relationship Conflict Following Couple-Based HIV Prevention Counseling: Results From the Harlem River Couples Project. J Interpers Violence, 32 (24), 3709-3734. PMID: 26319710 PMCID: PMC4769677 DOI: 10.1177/0886260515600878

McMahon JM1, Pouget ER, Tortu S, Volpe EM, Torres L, Rodriguez W (2015). Coupled-Based HIV Counseling and Testing: a Risk Reduction Intervention for US Drug-Involved Women and Their Primary Male Partners. Prev Sci, 16 (2), 341-51. PMID: 25512179 PMCID: PMC4310810 DOI: 10.1007/s11121-014-0540-9

Lewis CA, Dewhurst S, McMahon JM, Bunce CA, Keefer MC, Alio, AP (2014). Theoretical model of critical issues in informed consent in HIV vaccine trials. AIDS Care, 26 (11), 1452-60.

McMahon, JM, Pouget ER, Tortu S, Volpe EM, Torres L, Rodriguez W. (2014). Couple-Based HIV Counseling and Testing: a Risk Reduction Intervention for US Drug-Involved Women and Their Primary Male Partners. Prev Science.

Fairbanks, E., Shah, S., Wilde, M.H., McDonald, M.V., Brasch, J., McMahon, J.M. (2014). Successful recruitment methods in the community for a two-site clinical trail.. Applied Nursing Research, 27, 254-257.

Chimenti RL, Flemister AS, Tome J, McMahon JM, Flannery MA, Xue Y, Houck JR (2014). Altered tendon characteristics and mechanical properties associated with insertional achilles tendinopathy. J Orthop Sports Phys Ther, 44 (9), 680-9.

McMahon, J.M., Myers, J.E., Kurth, A.E., Cohen, S.E., Mannheimer, S.B., Simmons, J., Pouget, E.R., Trabold, N., Haberer, J.E. (2014). Oral pre-exposure prophylaxis (PrEP) for prevention of HIX in serodiscordant heterosexual couples in the United States : opportunities and challenges. AIDS Patient Care STDS, 28 (9), 462-474.

Uuskula, A.; McMahon, J.M.; Kals, M.; Talu, A.; Abel-Ollo, K.; Ruutel, K.; McNutt, L.A.; Des Jarlais, D.C. (2013). Risk for heterosexual HIV transmissino among non-injecting female partners of injecting drug users in Estonia. AIDS & Behavior, 17 (3), 879-888.

Wilde, M.H.; McDonald, M.V.; Brasch, J.; McMahon, J.M.; Fairbanks, E.; Shah, S.; Tang, W.; Scheid, E. (2013). Long-term urinary catheter users self-care practices and problems. Journal of Clinical Nursing, 22, 356-367.

Hasselberg M., McMahon J.M., Parker K. (2013). Validity, reliability, and utility of iButton for measurement of body temperture circadian rhythms in sleep/wake research. Sleep Medicine, 14, 5-11.

McMahon, J.M., Tortu, S., Torres, L., Rodriques, W.R., Hamid, R., Pouget, E.R. (2013). Effectiveness of Couple-Based HIV Counseling and Testing for women substance users and their primary male partners: a randomized trial.. Advances in Preventive Medicine, 13, 1-15. PMID: 23555059

Simmons, J., Rajan., S., McMahon, J. M. (2012). Retrospective accounts of injection initiation in intimate partnerships.. International Journal of Drug Policy, 23 (4), 303-311.

Simmons, J., McMahon, J.M. (2012). Barriers to drug treatment for IDU couples: the need for couple-based approaches.. Journal of Addictive Diseases, 31 (3), 242-257.

McMahon, J.M., Morrow, K.M., Weeks, M., Morrison-Beedy, D., Coyle, A. (2011). Potential impact of vaginal microbicides on HIV risk among women with primary heterosexual partners.. Journal of the Association of Nurses in AIDS Care, 22 (1), 9-16.

Uuskula A., McMahon J.M., Raag M., Silm S., Ruutel K., Talu A., Abel-Ollo K., Ahas R., Des Jarlais D.C. (2010). Emergent properties of HIV risk among injection drug users in Tallinn, Estonia: synthesis of individual and neighbourhood-level factors.. Sexually Transmitted Infections, 86 (3), iii79-84.

Wilde, M. H., Brasch, J., Getliffe, K., Brown, K.A., McMahon, J., Smith, J. A., Anson, E., Tang, W., & Tu, X. (2010). Study on the use of long-term urinary catheters in community dwelling individuals.. Journal of Wound Ostomy and Continence Nursing., 37 (3), 301-310.

Wilde, M. H., Getliffe, K., Brasch, J., McMahon, J., Anson, E., & Tu, X. (2010). A new urinary catheter-related quality of life instrument for adults.. .

Schiavenato, M., Byers, J.F., Scovanner, P., McMahon, J. M., Xia, Y., Lu, N., & He, H. (2008). Neonatal pain facial expression: evaluating the Primal Face of Pain. Pain, 138 (2), 460-471.

Bromage, T. G., McMahon, J. M., Thackeray, J. F., Kullmer, O., Hogg, R., Rosenberger, A. L., Schrenk, F., & Enlow, D. H. (2008). Craniofacial architectural constraints and their importance for reconstructing the early Homo skull KNM-ER 1470. The Journal of Child Pediatric Dentistry, 33 (1), 43-54.

Aaron, S., McMahon, J. M., Milano, D. M., Torres, L., Clatts, M., Tortu, S., Mildvan, D., & Simn, M. (2008). Intranasal transmission of hepatitis C virus: Virological and clinical evidence. Clinical Infectious Diseases, 47, 931-934.

McMahon, J.M., Pouget, E.R. Tortu, S. (2007). Individual and couple-level risk factors for hepatitis C infection among heterosexual drug-users: a multilevel dyadic analysis. The Journal of Infectious Diseases, 159, 1572-1582.

Cleland, C.M., Deren, S. Fuller, C.M., Blaney, S., McMahon, J.M., Tortus, S., Des Jarlais, D., Valhov, D. (2006). Syringe disposal among injection drug users in Harlem and the Bronx during the New York State Expanded Syringe Access Demonstration Program.. Health Education and Behavior, 34 (2), 390-403.

McMahon, J.M. Tortu, S., Pouget, E.R., Hamid, R., Neaigus, A. (2006). Contextual determinants of condom use among female sex exchangers in East Harlem, NYC: An Event Analysis. AIDS & Behavior, 10 (6), 731-741.

Flom, P.; McMahon, J.M.; & Pouget, R.R. (2006). Using PROC NLMIXED and PROC GLIMMIX to analyze dyadic data with binary outcomes. Northeast SAS Users Group Proceedings.

McMahon, J.M., Tortu, S. Rodriguez, W., Hamid, R. (2006). Women's Relationship-Focused HIV Counseling and Testing. A Manual for an Enhanced HIV-CT Intervention for Substance-Using Women. Evaluation Version.. .

McMahon, J.M., Tortu, S., Rodrigues, W., Hamid, R. (2006). Couples HIV Counseling and Testing. A Manual for an Enhanced HIV-CT Intervention for Substance-Using Heterosexual Couples.. Evaluation Version.

McMahon, J.M., Pouget, E.R., Tortu, S. (2006). A Guide for multilevel modeling of dyadic data with binary outcomes using SAS PROC NLMIXED. Computational Statistics and Data Analysis, 50 (12), 3663-36680.

Pouget, E.R., Deren, S., Fuller C., Blaney, S., McMahon, J.M., Kang, S-Y., Tortu, S., Andi, J.F. Des Jarlais, D., & Vlahov, D. (2005). Receptive syringe sharing among injection drug users in Harlem and the Bronx during the New York State Expanded Syringe Access Demonstration Program.. Journal of Acquired Immune Deficiency Syndromes, 39 (4), 471-477.

McMahon, J.M., Simm, M., Milano, D., & Clatts M. (2004). Detection of Hepatitis C Virus in the Nasal Secretions of an Intranasal drug-user.. Annals of Clinical Microbiology and Antimicrobials, 3 (1), 6.

Tortu, S., McMahon, J.M., Pouget, E.R., & Hamid, R. (2004). Sharing of noninjection drug-use implements as a risk factor for hepatitis C.. Substance Use and Misuse, 39 (2), 211-224.

Tortu, S., McMahon, J.M., Hamid, R., and Neaigus, A. (2003). Women's drug injection practices in East Harlem: an event analysis in a high risk community. AIDS & Behavior, 7 (3), 317-328.

McMahon, J.M., Tortu, S. (2003). A potential hidden source of hepatitis C infection among noninjecting drug users.. Journal of Psychoactive Drugs, 35 (4), 455-460.

McMahon, J.M.,Tortu, S., Torres, L, Pouget, E. R., & Hamid, R. (2003). Recruitment of heterosexual couples in public health research: a study protocol. BMC Medical Research Methodology, 3 (24), 1-12.

Deren, S.M., Fuller, C., Pouget, E. R., Blaney, S., Tortu, S., Kang, S-Y., McMahon, J.M., Andia, J.F., Des Jarlais, D.C., Johnson, B., Rosenblum, A. & Vlahov, D. (2003). Impact of expanding syringe access in New York on sources of syringes for injection drug users in Harlem and the Bronx, NYC, USA.. International Journal of Drug Policy., 14, 373-379.

McMahon, J.M. and Tortu, S. (2003). Evaluation of HIV intervention scenarios targeted to drug-using women from East Harlem: a mathematical modeling approach. Strategies to Improve the Replicability, Sustainability and Durability of HIV Prevention Interventions for Drug- Users. Washington, D.C.: U.S. Department of Health and Human Services, 51-62.

Tortu, S., Neaigus, A., McMahon, J.M. and Hagan, D. (2001). Hepatitis C among non-injecting drug users: a report. Substance Use and Misuse, 36 (4), 523-534.

Tortu, S., McMahon, J.M., Hamid, R. and Neaigus, A. (2000). Drug using women's sexual risk: an event analysis. AIDS & Behavior, 4 (4), 329 -340.

Bromage T.G., Smolyar I., Doty S.B.m McMahon J.M., Holtz E. (1997). Circadian growth rate variability of lamellar bone in rates exposed to microgravity. Gravitational and Space Biology, 11 (1), 39.

McMahon, J.M., Boyde, A., Bromage, T.G (1995). Pattern of collagen fiber orientation in the ovine calcaneal shaft and its relation to locomotor-induced strain. The Anatomical Record, 242 (2), 141-151.

McMahon J.M. (1993). Sympatric speciation by polycanalization of a female mating preference: an alternative to forest refugia theory. American Journal of Physical Anthropology, 16, 144.

McMahon, J.M. (1993). Ontogenetic and functional-adaptive factors influencing primate skull design. Advances in Morphometrics.

McMahon, J.M. (1991). SAS/PC 6.04 Update. Interface, 6 (10), 6-7.

Projects
PrEP implementation with US HIV-serodiscordant couples: Couples PrEP Demo Project (R01)
NIH/NIMH
9/25/2015 - 6/30/2020
Role: Principal Investigator

University of Rochester's Clinical and Translational Science Institute
NIH/NCRR
8/15/2016 - 5/31/2020
Role: Strategic Leadership Group
PI: Karl Kieburtz, Martin Zand, and Nancy Bennett

University of Rochester Center for AIDS Research (DCFAR) (P30)
NIH
5/1/2013 - 4/30/2019
Role: Co-Director, Clinical and Translational Sciences Core
PI: Stephen Dewhurst

Exploring Stigmas and HIV Diagnosis Delay, Linkage and Retention for MSM in Ghana
NIH/NIMH R21
5/23/2016 - 4/30/2019
Role: Co-Investigator
PI: LaRon Nelson

Chronic Exposure to cART Predispose Older HIV Infected Individuals to CNS Injury
DHHS/PHS/NIH R01
4/15/2013 - 3/31/2019
Role: Co-Investigator
PI: Giovanni Schifitto

Availability is Not Access: Recently Incarcerated Women, HIV Risk, and Substance Use Disorders
DHHS/PHS/NIH
7/15/2016 - 3/31/2019
Role: Co-Investigator
PI: Diane Morse

Exploring the multilevel determinants of HIV testing self-efficacy among young black men who have sex with men
CFAR
1/1/2018 - 12/31/2018
Role: Mentor
PI: Chen Zhang and Yu Liu

The associations of structural factors, syndemic stress factor and behavioral outcomes of HIV transmission in Black MSM: Investigating relationship status as an effect moderator
CFAR
9/1/2017 - 10/31/2018
Role: Co-Investigator
PI: Natalie Leblanc

Discrete choice experiments for PrEP uptake in young men who have sex with men - CFAR Supplement
University of Rochester Center for AIDS Research
8/1/16 - 12/31/18
Role: Multiple Principal Investigator