Li, Z., Serban, N., Swann, J.(2015),”An optimization framework for measuring spatial access over healthcare networks", BMC Health Services Research, 15:273.
An optimization framework for measuring spatial access over healthcare networks
Measurement of healthcare spatial access over a network involves accounting for demand, supply, and network structure. Popular approaches are based on floating catchment areas and are estimating patients’ opportunities; however the methods can overestimate demand over the network and fail to capture cascading effects across the system. In contrast, optimization models estimate patients’ experience and can incorporate user choice and other variations. They can also be useful towards targeting interventions to improve access. We compare Two Step FCA (E2SFCA) and optimization-based measures using a case study of specialty care for Cystic Fibrosis over the continental United States. E2SFCA overestimates demand over the network and fails to capture cascading effects across the system as shown by the difference in the estimated potential access measures.