People

Justin Knox
Justin Knox, PhD
Columbia University Mailman School of Public Health - Assistant Professor of Clinical Implementation Science and Intervention (in Psychiatry)
Email: jrk2115@columbia.edu
Education
PhD, Epidemiology, Columbia University
MPH, Sociomedical Sciences, Columbia University
MSc, Medical Anthropology, University College London
BA, Anthropology and Spanish, Middlebury College
BIO
Justin Knox is an Assistant Professor of Clinical Implementation Science and Intervention (in Psychiatry) at Columbia University.  His research focuses on HIV and substance use among racial and sexual minorities, both domestically and globally. He is the MPI of an R01 study (R01DA054553; MPI: Duncan & Knox) that seeks to investigate relationships between cannabis use and HIV prevention behaviors and biological vulnerability to HIV infection among Black men who have sex with men (MSM). He is also the PI of an R21 study (R21DA053156; PI: Knox) that seeks to investigate relationships between stimulant use and HIV care and prevention among Black MSM. He is also the PI of a K01 award (K01AA028199; PI: Knox) to develop and evaluate an intervention that aims to improve HIV treatment outcomes and reduce alcohol use in heavy-drinking Black MSM.

Dr. Knox earned his PhD in Epidemiology from Columbia University; his dissertation focused on substance use and HIV risk among social networks of Black South African men who have sex with men, work funded by an F31 from NIDA and the U.S. Fulbright Student Program. Dr. Knox has an MPH from Columbia University, an MSc in Medical Anthropology from University College London, and a Bachelor’s degree from Middlebury College. He also served as a Peace Corps volunteer in Swaziland.
Projects
Principal Investigator, Cannabis Use, PrEP and HIV Transmission Risk Among Black MSM in Chicago. Active
Principal Investigator, Heavy Cannabis Use, Neurocognition and PrEP Care Engagement among Young Black Sexual Minority Men. Active
Principal Investigator, Intervening to Improve HIV Treatment and Reduce Drinking in Young, Black Men Who Have Sex With Men. Active
Principal Investigator, The Siyaphambili Substance Use Study: Exploring Substance Use and Its Treatment in the Context of Achieving Sustained ART Adherence among Female Sex Workers. Active
Principal Investigator, Formative Research on How to Deliver Alcohol Interventions in the Context of HIV Prevention and Care among Black Sexual Minority Men. Completed
Principal Investigator, Social Environmental Drivers of Stimulant Use and Its Impact on HIV Prevention and Treatment in Black Men Who Have Sex With Men. Completed
Publications

Recent

Chen YT, Shrader CH, Duncan DT, Rudolph AE, Regan SD, Kim B, Pagkas-Bather J, Knox J, Fujimoto K, Schneider JA (2024).
Using GPS-defined venue-based affiliation networks among Black sexually minoritized men and transgender women to identify locations for HIV prevention interventions
Annals of Epidemiology, 96, 80-87. doi: 10.1016/j.annepidem.2024.07.001. PMCID: PMC11365700.

Shrader CH, Duncan DT, Driver R, Chen YT, Knox J, Bond K, Weinstein ER, Durrell M, Hanson H, Eavou R, Goedel WC, Schneider JA (2024).
Social network characteristics associated with more frequent HIV and STI prevention conversations: The N2 cohort study in Chicago
AIDS and Behavior, 28 (7), 2463-2475. doi: 10.1007/s10461-024-04348-5. PMCID: PMC11584229.

Knox J, Aharonovich E, Zingman BS, Stohl M, Walsh C, Elliott JC, Fink DS, Durant S, Menchaca R, Sharma A, Denning M, Hasin D (2024).
HealthCall: Smartphone enhancement of brief interventions to improve HIV medication adherence among patients in HIV care
AIDS and Behavior, 28 (6), 1912-1922. doi: 10.1007/s10461-024-04289-z.

Shrader CH, Duncan DT, Knox J, Chen YT, Driver R, Russell JS, Moody RL, Kanamori M, Durrell M, Hanson H, Eavou R, Goedel WC, Schneider JA (2024).
A network science approach to sex-polydrug use among Black sexually minoritized men and transgender women: The N2 cohort study
Prevention Science, 25 (4), 638-649. doi: 10.1007/s11121-023-01639-6. PMCID: PMC11588306.

Rosen JG, Knox JR, Rucinski KB, Mcingana M, Mulumba N, Comins CA, Shipp L, Makama S, Beckham SW, Hausler H, Baral SD, Schwartz SR (2024).
Polysubstance use profiles and HIV viremia in a South African cohort of female sex workers: A latent class analysis
Journal of Acquired Immune Deficiency Syndromes, 95 (3), 222-230. doi: 10.1097/QAI.0000000000003356. PMCID: PMC10922222.


Notable

Knox J, Reddy V, Lane T, Lovasi GS, Hasin D, Sandfort T (2019).
Safer sex intentions modify the relationship between substance use and sexual risk behavior among black South African men who have sex with men
International Journal of STD and AIDS, 30 (8), 786-794. doi: 10.1177/0956462418825333. PMCID: PMC6765215.

Knox J, Reddy V, Lane T, Lovasi G, Hasin D, Sandfort T (2017).
Determinants of hazardous drinking among Black South African men who have sex with men
Drug and Alcohol Dependence, 180, 14-21. doi: 10.1016/j.drugalcdep.2017.07.036. PMCID: PMC5648600.

Knox J, Reddy V, Lane T, Hasin D, Sandfort T (2017).
Substance use and sexual risk behavior among Black South African men who have sex with men: The moderating effects of reasons for drinking and safer sex intentions
AIDS and Behavior, 21 (7), 2023-2032. doi: 10.1007/s10461-016-1652-y. PMCID: PMC5484757.

Dr. Knox's My Bibliography Profile