Frequencies for first 10,000 rows of immed variable in nhamcsed2004 dataset :

immediacy with which |
    patent should be |
                seen |      Freq.     Percent        Cum.
---------------------+-----------------------------------
   unknown/no triage |      1,304       13.04       13.04
less than 15 minutes |      1,593       15.93       28.97
      15- 60 minutes |      3,903       39.03       68.00
   >1 hour - 2 hours |      2,034       20.34       88.34
 >2 hours - 24 hours |      1,166       11.66      100.00
---------------------+-----------------------------------
               Total |     10,000      100.00

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