Average Number of Illness or Injury Bed Days* During the Preceding 12 Months Among Adults Aged ≥18 Years, by Age Group -- National Health Interview Survey, US, 2007
QuickStats from the CDC's Morbidity and Mortality Weekly Report.
http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5822a5.htm?s_cid=mm5822a5_e

