1. Hospital Access in Upstate New York David Johnston EPI 621 April 27, 2010

2. 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

3. 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

4. Methods

5. 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

6. http://www.stevemorse.org/jcal/latlonbatch.html?direction=forward

7. Data Collection Roads – ALIS (Accident Location Information System) – Street Centerline Data Population data – 2000 Census – Block group level

8. Calculating Drive Times Network Analyst – ArcGIS Extension – Can be used to calculate routes, service areas, closest facilities etc…

9. Step 1: Create new Network Dataset Step 2: Create “New Service Area”

10. Step 3: Load hospital locations Step 4: Set options for service areas

11. Step 5: “Solve” to draw the service area polygons

12. Results

15. Population Distribution by Drive Times Driving Time (Minutes)PopulationPercent 0-154,640,91266.03% 15-301,823,96625.95% 30-45436,8916.22% >45127,2231.81%

17. 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…

18. Questions?