Using Exploratory Spatial Data Analysis & Windshield Tours to Select Neighborhoods for a Neighborhood-Based Study of Black Men's Sexual HIV Risk and Protective Behaviors
Method: Based on 2012 U.S. Census block group data for ≥ 40% Black population and average median household income, we used three ESDA techniques: cartographic visualizations, scatterplots, and cluster analysis. Next, we conducted windshield tours to visually verify demographic and neighborhood characteristics.
Results: Graphic visualizations best depict the study’s results. Cluster analyses resulted in 4 ellipses consisting of 24 neighborhood block groups. Ellipse 1 showed the highest concentration of Black residents (> 90%) and lowest income (≥ $20K); Ellipse 4 showed the lowest concentration of ≥ 40% Black residents and highest income ($50K). We randomly sampled neighborhood clusters from ellipses 1 through 4 to obtain 9 neighborhoods, and conducted focus groups with 83 Black, mostly (90%) heterosexually-identified men, ages 18 to 48.
Conclusion: ESDA and graphic visualizations, combined with windshield tours, provide an innovative and rigorous approach to neighborhood selection that can inform future neighborhood-based HIV prevention research.
Learning Areas:Diversity and culture
Social and behavioral sciences
Explain exploratory spatial data analysis Describe windshield tours Demonstrate how ESDA was used to select neighborhoods for HIV prevention focus group study with Black men in Washington, DC Discuss the implications of geospatial analysis methods for public health research in general, and HIV prevention research in particular
Keyword(s): Geographic Information Systems (GIS), HIV Risk Behavior
Qualified on the content I am responsible for because: I am a Postdoctoral Scientist and Project Director of the study on which this abstract is based.
Any relevant financial relationships? No
I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.