This dataset captures data maintained by the Record Research Request Service (R3) at the University of Pittsburgh. R3 is a service of the Department of Biomedical Informatics (DBMI), provisioning UPMC clinical data and authorizing additional UPMC data sources for research.

Data captures emergency department (ED) visits and primary care visits for the pediatric population (ages 0-17) served by UPMC in Allegheny County by Census Block Group geography (using 2010 U.S. Census geographies).

ED Data captures total visits, along with visits related to asthma, injury, low-acuity visits, and respiratory tract infections. Low acuity visits are often defined as visits by patients that didn't arrive by ambulance and visits that were less-serious or less-urgent where the patient was discharged to their normal place of residence.

The primary care visit data includes total visits, well child visits, and asthma diagnoses.

Each dataset includes the estimated population in each blockgroup. This estimate was obtained from the U.S. Census Bureau's 2015-19 5-year American Community Survey. Pediatric populations are defined as those under age 18.

UPMC data captures a large share of ED visits due to the health system's role with UPMC Children's Hospital of Pittsburgh.

The Regional Data Center teamed with colleagues at the University of Pittsburgh Center for Social Research to geocode data to blockgroup, and the totals were computed by R3.

Special thanks to partners at The Pittsburgh Study for helping us make this data available, and the Data Across Sectors for Health program for providing financial support for this work.