Trends in the Geospatial Distribution of Inpatient Adult Surgical Services across the United States.

OBJECTIVE: The aim of this study was to define trends in the geographic distribution of surgical services in the United States to assess possible geographic barriers and disparities in access to surgical care.

SUMMARY BACKGROUND DATA: Despite the increased need and utilization of surgical procedures, Americans often face challenges in gaining access to health care that may be exacerbated by the closure and consolidation of hospitals. Although access to surgical care has been evaluated relative to the role of insurance, race, and health literacy/education, the relationship of geography and travel distance to access has not been well studied.

METHODS: The 2005 and 2015 American Hospital Association annual survey was used to identify hospitals with surgical capacity; the data were merged with 2010 Census Bureau data to identify the distribution of the US population relative to hospital location, and geospatial analysis tools were used to examine a service area of real driving time surrounding each hospital.

RESULTS: Although the number of hospitals that provided surgical services slightly decreased over the time periods examined (2005, n = 3791; 2015, n = 3391; P<0.001), the number of major surgery hospitals increased from 2005 (n = 539) to 2015 (n = 749) (P<0.001). The geographic location of hospitals that provided surgical services changed over time. Specifically, although in 2005 852 hospitals were located in a rural area, that number had decreased to 679 by 2015 (P<0.001). Of particular note, from 2005 to 2015 there was an 82% increase in the number of people who lived further than 60 minutes from any hospital (P<0.001). However, the number of people who lived further than 60 minutes from a major surgery hospital decreased (P<0.001).

CONCLUSIONS: Although the number of rural hospitals decreased over the last decade, the number of large, academic medical centers has increased; in turn, there has been an almost doubling in the number of people who live outside a 60-minute driving range to a hospital capable of performing surgery.