hospital access in upstate new york david johnston epi 621 april 27, 2010
DESCRIPTION
Project Goal Create a map showing: – Hospital locations across New York – Drive times to the nearest hospital across New York Determine the amount of people within designated drive times of hospitalsTRANSCRIPT
Introduction
• Access to healthcare is an important aspect of public health– Emergency situations• Traumas involving car accidents or major disasters
where rapid care is vital to survival
– Non-emergency situations• People who live farther away from healthcare facilities
may be less likely to go for care when they should
• Determining areas that need better coverage
Project Goal
• Create a map showing:– Hospital locations across New York– Drive times to the nearest hospital across New
York• Determine the amount of people within
designated drive times of hospitals
Data Collection
• Hospitals– List of hospitals and addresses from internet– Checked against hospital list on DOH website– Converted addresses to latitude/longitude using
online batch converter– Added to the hospital list, saved as CSV and
imported into ArcMap
Data Collection
• Roads– ALIS (Accident Location Information System)– Street Centerline Data
• Population data– 2000 Census – Block group level
Calculating Drive Times
• Network Analyst– ArcGIS Extension– Can be used to calculate routes, service areas,
closest facilities etc…
Population Distribution by Drive Times
Driving Time (Minutes) Population Percent0-15 4,640,912 66.03%
15-30 1,823,966 25.95%30-45 436,891 6.22%
>45 127,223 1.81%
Conclusions
• Limitations– Border-effect– Only accounts for hospitals, no other service
facility• Further research– Cluster/spatial analysis of areas with low access– Determine coverage for specialty areas such as
cardiac facilities, pediatrics etc…