Frequencies for first 10,000 rows of immed variable in nhamcsed2003 dataset :

immediacy with which |
    patent should be |
                seen |      Freq.     Percent        Cum.
---------------------+-----------------------------------
   unknown/no triage |      1,837       18.37       18.37
less than 15 minutes |      1,695       16.95       35.32
      15- 60 minutes |      3,371       33.71       69.03
   >1 hour - 2 hours |      1,962       19.62       88.65
 >2 hours - 24 hours |      1,135       11.35      100.00
---------------------+-----------------------------------
               Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016