Intro to Mediation and Moderation Concepts and Methods

Green Banner with the Health Equity Action Network logo overlayed on the right side
Thursday, Oct. 19, 2023, 10:30 am – 12 pm PT


• Introduce the concept of statistical mediation and methods for assessing mediation

• Introduce the concept of statistical moderation, types of moderation, and limitations of moderation analyses

• Point to resources to learn more about mediation and moderation analyses, including how to do them and interpret their results


Tor Neilands, PhD is a Professor at the UCSF Division of Prevention Science in the Department of Medicine at UCSF. Originally trained as a social and quantitative psychologist, Neilands spent eight years as a statistical consultant at the University of Texas academic computing center before coming to UCSF in 2001. Since arriving at UCSF, he has participated as statistical co-investigator or consultant on over 80 NIH, CDC, and state projects in the areas of HIV prevention, reproductive health, aging research, and tobacco prevention. His methodological areas of interest are multivariate statistical models with a special interest in latent variable models for survey scale development and validation, and mixed effects (i.e., multilevel; HLM) models for clustered and longitudinal data, including dyadic data. His substantive interests include training the next generation of prevention researchers working in U.S. minoritized/marginalized communities. He is currently PI of two NIH-sponsored R25 research education grants to foster grant-writing and related research capacity-building for early-career faculty working in U.S. minority communities to prevent the spread of HIV/AIDS and STIs and to improve the lives of those living with HIV/AIDS. He also actively collaborate as a senior statistician and quantitative methods co-investigator on multiple prevention research projects. He is also a co-author of Primer of Applied Regression & Analysis of Variance with Drs. Stanton Glantz and Bryan Slinker (McGraw-Hill, 2016).

About the ISD Webinar Series

The Investigator Skills Development (ISD) Webinar Series is presented by the Investigator Skills Development Unit (ISDU) of the UCSF Research Coordinating Center to Reduce Disparities in Multiple Chronic Diseases (RCC-RD-MCD). 

Co-Sponsored by CAPS Town Hall and the CAPS Implementation Science and Health Systems (ISHS) Core

ISDU Director: Mandana Khalili, MD, MAS, Professor of Medicine, UCSF, Chief of Clinical Hepatology, San Francisco General Hospital

ISDU Co-Director: Edwin Charlebois, PhD, Professor of Medicine,  Division of Prevention Science, UCSF