Modified Hospital Service Areas (mHSAs)
Hospital Service Areas is a concept that originated with the Dartmouth Atlas of Healthcare, which explains that an HSA is a “collection of ZIP codes whose residents receive most of their hospitalizations from the hospitals in that area.” We have modified the HSAs in the atlas to better fit the current acute care hospital distribution in Connecticut. Instead of town-level reporting and encountering small-number problems, modified HSAs are alternative geographic reporting units that allow for results to be displayed at a geographic level below counties. Learn more about mHSAs.
Health Reference Groups (HRGs)
Health Reference Groups were created by the Connecticut Health Foundation as a means of linking towns and cities demographically instead of geographically. By classifying towns with similar characteristics together, specific conclusions about issues such as health disparities can be drawn and applied to a group of towns spread across the state. Learn more about HRGs.