Principal Investigators’ New Websites

May 6, 2020:

Stephanie Lanza, Bethany Bray, Linda Collins, Susan Murphy, Runze LiAs previously announced, substantial changes lie ahead for The Methodology Center. Over the coming months, we will stop updating this website. Resources will remain available for at least a year, but in order to provide the latest information, each of our investigators will maintain her or his own website. These sites will include content developed at The Methodology Center and new resources related to the researcher’s future work.

Stephanie Lanza and Ashley Linden-Carmichael built a website for the Addictions and Innovative Methods (AIM) lab. Their great new site,, describes their research and includes the content about time-varying effect modeling (TVEM) from The Methodology Center’s website.

Susan Murphy has incorporated The Methodology Center’s content on just-in-time adaptive interventions in her website, The site also includes workshop materials and other resources.

Bethany Bray‘s new site at will include The Methodology Center’s resources for latent class analysis (LCA) and latent transition analysis (LTA). Bethany has concrete plans for new LCA and LTA resources, so stay tuned.

Runze Li will update his page at to incorporate Methodology Center resources on variable screening and variable selection for high-dimensional data analysis.

Linda Collins will build a new website to house The Methodology Center’s content on the multiphase optimization strategy (MOST) for optimizing interventions after she moves to New York University. In the meantime, follow Linda on Twitter, @collins_most.

Daniel Almirall and Inbal “Billie” Nahum-Shani’s informative website,, will soon incorporate The Methodology Center’s resources for the sequential, multiple assignment, randomized trial (SMART).

More information will follow in June or July. Thank you for staying connected to our research! We are all proud of our time at The Methodology Center and very excited about the future.

New Study Aims to Prevent Spread of HIV in High-Risk Populations

photograph of a red ribbonMay 9, 2019:

Despite great strides in decreasing the HIV infection rate in the United States over the last three decades, certain populations remain at high risk of infection. Young men who have sex with men (YMSM), especially Black/African American and Hispanic/Latino YMSM who live in inner cities, account for the most new infections annually. A new paper in JMIR Research Protocols by researchers from Children’s Hospital Los Angeles, Methodology Center Investigators Bethany Bray and Cara Exten Rice, and graduate student Eric Layland, describes the protocol for a longitudinal research study designed to improve HIV care and prevention among Black/African American and Hispanic/Latino YMSM.

The goal of the Healthy Young Men’s Cohort Study is to prevent new HIV infections and improve engagement with HIV care among Black/African American and Hispanic/Latino YMSM. Investigators are collecting data on drug use, sexual risk and protective behaviors, health care connectedness, mental health, stress and discrimination, emotion regulation, personal history with trauma, and more. This mixed-methods study  combines qualitative data with quantitative and biological data in order to generate the richest and most accurate data possible. These data will help characterize Black/African American and Hispanic/Latino YMSM engagement in HIV care and prevention.

Methodology Center Investigator Bethany Bray spoke about why the Healthy Young Men’s Cohort Study will have a positive impact on the health of Black/African American and Hispanic/Latino YMSM in the future. “Research that can inform tailored approaches to prevention and treatment engagement is critical. Society cannot end the HIV epidemic by 2030 without focusing on the high-risk populations in these two cohorts. These data will serve as a resource to a broad range of researchers.”

In the Healthy Young Men’s Cohort Study, data will be collected eight times at six-month intervals. The study has retained 97% of participants over the first 12 months. We look forward to the insights this study will yield.


Kipke M. D., Kubicek K., Wong C. F., Robinson Y. A., Akinyemi I. C., Beyer W. J., Hawkins W., Rice C. E., Layland E., Bray B. C., & Belzer M. (2019). A focus on the HIV care continuum through the Healthy Young Men’s Cohort Study: Protocol for a mixed-methods study. JMIR Research Protocols 8(1). PMCID: PMC6365874