Research AreaDr. Okafor’s research interests focuses on the epidemiology of substance use among persons living with or at-risk for HIV infection and other vulnerable populations. He is interested in the design, implementation and evaluation of substance use interventions for these populations. His research also involves bridging behavioral measures (particularly substance use) with biological markers of clinical outcomes in epidemiologic and intervention science.
Current Courses Taught
Okafor CN, van Nunen L, Ipser J, Dannat L, Lake M, Shoptaw S, Stein DJ, London E. Contingency Management for Methamphetamine Use Disorder in South Africa. Drug and Alcohol Review. December 2019: doi.org/10.1111/dar.13019
Li M, Takada S, Okafor CN, Gorbach PM, Shoptaw SJ & Cole SW. Experienced Homophobia and Gene Expression Alterations in Black and Latino Men who have Sex with Men in Los Angeles County. Brain Behav Immun. October 2019: doi.org/10.1016/j.bbi.2019.09.021
Okafor CN, Xinguang C, Surkan P, Martin EM, Plankey M, Shoptaw S, Cook RL, Li M. Associations between Current and Cumulative Exposure to Marijuana and Changes in Cognitive Processing Speed and Flexibility for 17-years in HIV-seropositive and HIV-seronegative Men in the Multicenter AIDS Cohort Study. Subst Use Misuse. January 2019: doi: 10.1080/10826084.2018.1495736
Li MJ, Okafor CN, Gorbach PM, Shoptaw S. Intersecting burdens: Homophobic victimization, unstable housing, and methamphetamine use in a cohort of men of color who have sex with men. Drug Alcohol Depend. 2018;192:179-185. doi:10.1016/j.drugalcdep.2018.07.039.
Okafor CN, Christodoulou J, Bantjes J, Qondela T, Stewart J, Shoptaw S, Tomlinson M, Rotherman-Borus MJ. Understanding HIV Risk Behaviors among Young Men in South Africa: A Syndemic Approach. AIDS Behav. July 2018. doi:10.1007/s10461-018-2227-x.
Chen X, Yu B, Stanton B, Cook RL, Chen D-GD, Okafor CN. Medical Marijuana Laws and Marijuana Use Among U.S. Adolescents: Evidence From Michigan Youth Risk Behavior Surveillance Data. J Drug Educ. October 2018:47237918803361. doi:10.1177/0047237918803361.
Okafor CN, Barnett W, Zar HJ, Nhapi R, Koen N, Shoptaw S, Stein DJ. Associations of Emotional, Physical, or Sexual Intimate Partner Violence and Depression Symptoms among South African Women in a Prospective Cohort Study. J Interpers Violence. August 2018:886260518796522. doi:10.1177/0886260518796522.
Okafor CN, Gorbach PM, Ragsdale A, Quinn B, Shoptaw S. Correlates of Preexposure Prophylaxis (PrEP) Use among Men Who Have Sex with Men (MSM) in Los Angeles, California. J Urban Health Bull N Y Acad Med. June 2017. doi:10.1007/s11524-017-0172-z.
Okafor CN, Cook RL, Chen X, Surkan PJ, Becker JT, Shoptaw S, Martin E, Plankey MW. Prevalence and correlates of marijuana use among HIV-seropositive and seronegative men in the Multicenter AIDS Cohort Study (MACS), 1984–2013. Am J Drug Alcohol Abuse. 2016;0(0):1-11. doi:10.1080/00952990.2016.1245738.
Okafor CN, Zhou Z, Burrell LE, Kelso NE, Whitehead NE, Harman JS, Cook CL, Cook RL. Marijuana use and viral suppression in persons receiving medical care for HIV-infection. Am J Drug Alcohol Abuse. July 2016:1-8. doi:10.1080/00952990.2016.1191505.