COVID-19 Spatial Accessibility

Nov-02 : In this lesson, we will study COVID-19 spatial accessibility of health care.

Analysis

To the best of your ability, draw or outline a workflow for the Kang et al. 2020 analysis. You may work in partners or small groups on this task.

Reading

Kang, J. Y., A. Michels, F. Lyu, Shaohua Wang, N. Agbodo, V. L. Freeman, and Shaowen Wang. 2020. Rapidly measuring spatial accessibility of COVID-19 healthcare resources: a case study of Illinois, USA. International Journal of Health Geographics 19 (1):1–17. DOI:10.1186/s12942-020-00229-x.

Slides (class access only)

Reproduction Study Context

Kang et al (2020) describes the analysis and cyberinfrastructure behind the spatial access component of this Where COVID-19 dashboard for Illinois
Derrick Burt and Kufre Udoh completed a reproduction and replication of the study
Based on our feedback, the authors have continued to update the code in the Jupyter notebook for the study on CyberGISX
Then we fixed some bugs and reproduced the study in Spring 2021.
Finally, Derrick Burt made significant improvements for accuracy, reproducibility, and computational efficiency during Summer 2021.

Enhanced Two Step Floating Catchment Area

Two step floating catchment (2SFCA) approximates the gravity model
- developed for modeling access to primary care physicians
- for each service area, calculate the ratio of services (physicians) to population
- for each location, sum the service:population ratios
Enhanced two step floating catchment (E2SFCA)
- rather than using a single service area for each point of service, calculate three different service areas
- multiply each service area “ring” by a weight, starting with 1 for the closest, and decreasing for the two further areas

Technology Context

CyberGISX is a geospatial cyberinfrastructure project at the CyberGIS Center for Advanced Digital and Spatial Studies at the University of Illinois at Urbana-Champaign, funded by the National Science Foundation and directed by Dr. Shaowen Wang. It is set up to run Juypter notebooks using Python with a suite of pre-installed packages for data science and spatial analysis.
CyberGISX is a prime example of geospatial cyberinfrastructure

References

Luo, W., and Y. Qi. 2009. An enhanced two-step floating catchment area (E2SFCA) method for measuring spatial accessibility to primary care physicians. Health and Place 15 (4):1100–1107. DOI:10.1016/j.healthplace.2009.06.002.

Main Page