Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Example of three types of geospatial data used for linkage, including spatial polygons, point data, and raster data. Area Deprivation Index (spatial polygon), traffic counts (point data), and fine particulate air pollution (PM2.5) plotted for 3 different recruitment areas in the U.S., including Los Angeles, California (top row), St. Louis, Missouri (middle row), and Ann-Arbor-Detroit region, Michigan (bottom row).
