Ninety-one percent of the U.S. population lives within an hour of an emergency stroke center and 90% reside within 60 minutes of a telestroke emergency department, according to new data published in JAMA Network Open.

Only a decade ago, 20% of Americans lacked access to timely stroke care. In order to gain a better picture of modern day population-level access to such care, the team analyzed data from the 2019 National Emergency Department Inventory (NEDI).

They found that 96% of the population is located within 60 minutes of an ED with any acute stroke expertise. The findings will be presented at a conference of the American Stroke Association, held in New Orleans and virtually, Feb. 8-11.

“Overall, we observed a substantial increase in population access to acute stroke care in this cross-sectional study relative to previous reports using alternative methods," lead author, Kori S. Zachrison, MD, MSc, with the Department of Emergency Medicine at Massachusetts General Hospital, and colleagues wrote in the Feb. 9 research letter. “This increase likely reflects the extensive and ongoing work to improve stroke systems of care, including greater stroke center accreditation and expansion of telestroke capacity.”

Zachrison et al. also found that access to an ED in a stroke center or with telestroke capabilities varied by region, from 91% in the Mountain West time zone to 99% in the mid-Atlantic region.

Meanwhile, among the 13,191,024 people (4% of the total population) without 60-minute access, 7,905,276 (60%) were within 60 minutes of a non-telestroke, non-stroke center ED, according to the authors.

Another key finding from the team’s analysis was that in 2019, there were 5,587 EDs in the U.S., of which 2,563 (46%) were in stroke centers while 2,505 (45%) were classified as having telestroke services.