The surgical 30-day readmission rate dropped from 12.7% in 2008 to 12.4% in 2010, while the medical 30-day readmission rate went from 16.2% to 15.9%.
As in most reports featuring data from the Dartmouth study, this report showed wide variation, especially among academic medical centers.
For example, among medical patients, the academic medical centers with the highest readmission rates in 2010 were the Cleveland Clinic, with 21.6%, and the Hospital of the University of Pennsylvania, with 21.4%.
The hospital with the lowest rate was NYU Langone Medical Center, with 14.4%.
Among surgical patients initially treated at academic medical centers, the highest readmission rate was at the University of Medicine and Dentistry in New Jersey, (UMDNJ), with 20.7%, and the Stony Brook University Medical Center on Long Island, with 20.6%.
The hospital with the lowest readmission rate for surgical patients was at Creighton University Medical Center, 9.4%.
Representatives of the UMDNJ and Cleveland Clinic declined to comment, saying that they needed more time to read the report.