Mary-Lynn Brecht, Ph.D.

ISAP Researchers' Profiles

Mary-Lynn Brecht, Ph.D.

Mary-Lynn Brecht, Ph.D., Research Statistician. Dr. Brecht is a researcher and statistical support specialist for the UCLA Integrated Substance Abuse Programs. She is currently conducting a long-term follow-up of methamphetamine users to study use and recovery trajectories. Topics of recent projects have included HIV risk behaviors among methamphetamine users, long-term outcomes of treatment for methamphetamine use, and needs assessment among service providers for technical assistance and training related to problem gambling. She directs the Statistical Support core for the ISAP Center for Advancing Longitudinal Drug Abuse Research. She is an adjunct professor in the UCLA School of Nursing where she also directs the Research Office Design and Data Core. She has had extensive training and experience in the development/adaptation, application, and integration of quantitative research methodologies, particularly those for longitudinal analyses, with emphasis in the areas of drug-abuse, health systems, and treatment evaluation research.

Education and Training

  • Stanford University, B.S., Statistics, 1966
  • Stanford University, M.A., Education, 1967
  • University of California, Los Angeles, Ph.D., Research Methods/Evaluation, 1979


  • Research & statistical methods, especially for longitudinal analysis Substance abuse etiology
  • Epidemiology Treatment evaluation
  • Methamphetamine abuse

Contact Info

UCLA Integrated Substance Abuse Programs
11075 Santa Monica Blvd., Suite 100
Los Angeles, CA 90025

Selected Publications

  1. Brecht, M.-L., O’Brien, A., von Mayrhauser, C. & Anglin, M.D. (2004) Methamphetamine use behaviors and gender differences. Addictive Behaviors, 29, 89-106.
  2. Brecht, M.-L., Greenwell, L., & Anglin, M.D. (2005). Methamphetamine treatment: trends and predictors of retention and completion in a large state treatment system (1992-2002). Journal of Substance Abuse Treatment, 29, 295-306.
  3. Brecht, M.-L., Greenwell, L., & von Mayrhauser, C. (2006). Outcomes of treatment for methamphetamine use. Journal of Psychoactive Drugs, SARC supplement 3, November, 415-426.
  4. Brecht, M.-L., Greenwell, L. & Anglin, M. D. (2007). Substance use pathways to methamphetamine use among treated users. Addictive Behaviors, 32, 24-38.
  5. Murphy, D., Brecht, M.L., Herbeck, D., Evans, E., Huang, D., & Hser, Y.-I. (2008) Longitudinal HIV risk behavior among the Drug Abuse Treatment Outcome Study (DATOS) Adult Sample. Evaluation Review, 32, 83-112. PMCID #2538490
  6. Brecht, M.-L., Huang, D., Evans, E., & Hser, Y.-I. (2008). Polydrug use and implications for longitudinal research: ten-year trajectories for heroin, cocaine, and methamphetamine users. Drug and Alcohol Dependence, 96, 193-201. NIHMSID #57388.
  7. Brecht, M.-L., Stein, J., Murphy, D., Evans, L., & Longshore, D. (2009) Predictors of intention to change HIV sexual and injection risk behaviors among heterosexual methamphetamine-using offenders in drug treatment: A Test of the AIDS Risk Reduction Model. Journal of Behavioral Health Services and Research, 36, 247-266.
  8. Murphy, D., Brecht, M.-L., Huang, D., & Herbeck, D. (2009). Trajectories of HIV Risk Behavior Among the National Longitudinal Survey of Youth Sample:  1997 – 2005. Journal of Youth and Adolescence,38(9), 1226-1239. PMCID#2726972
  9. Brecht, M.-L., Huang, D., & Hser, Y.-H. (2010). Introduction to the special issue on "Approaches and issues in longitudinal analysis of substance use and related behaviors." Journal of Drug Issues, 40, 1-6.
  10. Brecht, M.-L. & Urada, D (2011) Treatment Outcomes for Methamphetamine Users: California Proposition 36 and Comparison Clients. Journal of Psychoactive Drugs, 43, 68-76.
  11. Maxwell, J. & Brecht, M.-L. (2011) Methamphetamine: here we go again? Addictive Behaviors. 36, 1168-73. PMID: 21875772
  12. Murphy, D., Brecht, M.-L., Huang, D., & Herbeck, D. (2012) Trajectories of delinquency from age 14 to 23 in the National Longitudinal Survey of Youth sample. International Journal of Adolescence and Youth, 17, 47-62.
  13. Brecht, M.-L., Lovinger, K., Herbeck, D., & Urada, D. (in press) Patterns of treatment utilization and methamphetamine use during first ten years after methamphetamine initiation. Journal of Substance Abuse Treatment.
  14. Herbeck, D. & Brecht, M.-L. (in press) Substance use and mental health characteristics associated with cognitive functioning among adults who use methamphetamine. Journal of Addictive Diseases.
  15. Brecht, M.-L. & Herbeck, D. (in press) Methamphetamine use and violent behavior: user perceptions and predictors. Journal of Drug Issues.

Last updated - 01/31/2014

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