UTH

The Place and Health Lab (PAHL)

Integrating spatial science and epidemiology to understand how place influences health.

Identifying where to understand why.

Research

Objectives

At the Place and Health Lab (PAHL), we study how where people live, work, and age influences why certain health outcomes occur. Our research integrates spatial epidemiology, data science, and community collaboration to understand the geographic, social, and environmental conditions that shape health and well-being.

We use geospatial analysis, Bayesian modeling, and interactive data visualization to uncover patterns in chronic disease, cancer, food insecurity, and access to care. By linking neighborhood characteristics, such as persistent poverty, rurality, and environmental exposure to health outcomes, our work identifies communities most affected by preventable disparities.

Our goal is to transform spatial data into actionable insight. We develop maps, dashboards, and tools that help public health agencies, health systems, and community organizations target interventions and resources more effectively. Through this applied, place-based approach, the Place and Health Lab seeks to improve health outcomes and promote opportunity across diverse populations and regions.

Projects

Persistent Poverty and Cancer Disparities

Persistent Poverty and Cancer Disparities

This project examines how persistent and enduring poverty shape cancer risk across urban and rural areas in Texas. By combining Texas Cancer Registry data with neighborhood-level socioeconomic indicators, the study uses Bayesian spatial modeling to identify high-risk regions for colorectal cancer incidence and late-stage diagnosis. Findings inform place-based prevention strategies and state-level resource allocation to reduce disparities in cancer outcomes.

San Antonio Food Insecurity Needs Assessment

San Antonio Food Insecurity Needs Assessment

In collaboration with the City of San Antonio Metropolitan Health District, the Place and Health Lab led a comprehensive Food Insecurity Needs Assessment to understand the geographic and systemic factors driving hunger across Bexar County. Using a mixed-methods approach, the project combined geospatial analysis, surveys, focus groups, and community conversations to identify priority neighborhoods and resource gaps. The team developed an interactive dashboard and three public reports, on data visualization, law and policy review, and community perspectives, to inform the city’s Community Health Improvement Plan. This work highlights how mapping and community engagement can guide equitable access to food and strengthen local health systems.

https://cinow.info/online-tools-posts/food-insecurity-data-portal/

Mapping Food Insecurity in Galveston

Mapping Food Insecurity in Galveston

In partnership with the UTMB Department of Family Medicine, this project develops interactive dashboards to visualize food insecurity and related non-medical drivers of health in Galveston County. Using GIS-based methods, the team integrates local data on retail food access, school meal programs, and social service locations to identify geographic gaps in healthy food availability. The resulting web tools support community planning and future grant applications aimed at improving nutrition and population health.

Neighborhood Environments and Aging in Place

Neighborhood Environments and Aging in Place

Supported by a pilot grant from the Cizik School of Nursing, this study investigates how neighborhood characteristics—such as walkability, greenspace, and social cohesion—affect physical activity and psychosocial outcomes among older adults. Using GIS-based neighborhood metrics and participant data from the CART study, the project explores how supportive community environments promote aging in place and well-being among older populations.

The Joint Collaborative on Geospatial Analysis and Health (JCoGAH)

The Joint Collaborative on Geospatial Analysis and Health (JCoGAH)

The Joint Center on Geospatial Analysis and Health, a collaboration between UTHealth Houston and MD Anderson Cancer Center, provides geospatial research support to investigators and community partners. The center develops mapping tools, spatial databases, and dashboards that enhance data-driven decision-making in health research. The Place and Health Lab contributes analytic expertise and student mentorship to projects addressing cancer prevention, chronic disease, and environmental exposures across Texas.

https://sph.uth.edu/projects/jcogah/

People

Ryan Ramphul

Ryan Ramphul, PhD

Assistant Professor
Houston

Dr. Ryan Ramphul is an Assistant Professor of Epidemiology at UTHealth Houston School of Public Health and Director of the UTHealth Place and Health Lab. His research integrates spatial epidemiology, data science, and community collaboration to study how geography, environment, and social context shape health outcomes. He leads projects on cancer disparities, food insecurity, and aging, developing mapping tools that translate data into action.

Publication List

Jooyeon Lee

Jooyeon Lee, MS

Graduate Research Assistant
Houston

View bio

Yanchen Liu

Yanchen Liu, MPH

Graduate Research Assistant
Houston

View bio

Yixiao Chen

Yixiao Chen, MS

Graduate Research Assistant
Houston

View bio

Lauren Chapa

Lauren Chapa, BS

GRA
Houston

View bio

Alumni

Name and Credentials Title Organization Contact Information
Rebecca Hurliman, MPH Graduate Research Assistant Westat Research Services
Alexander Devora, PhD Graduate Research Assistant Westat Research Services

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About School of Public Health

UTHealth Houston is internationally recognized as one of the world's great research universities. The School of Public Health connects research, education, patient care, and community outreach in bold, innovative ways. Basic scientists and clinical researchers from all disciplines work together to deliver innovative solutions that create the best hope for a healthier future. Our faculty are pioneering radical solutions for imminent public health problems and provide the tools and resources that will push our students to think critically and creatively both in and out of the classroom. This is where academic rigor meets real-world application.

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