2SFCA (Two Steps Floating Catchment Area)

The Two-Step Floating Catchment Area (2SFCA) method is a widely used spatial accessibility measure. It is commonly applied in healthcare accessibility studies to assess the availability of healthcare services relative to the population in a given area. The 2SFCA method combines the concepts of supply (e.g., number of healthcare providers) and demand (e.g., population) within a defined catchment area to produce an accessibility score.