Frequencies for first 10,000 rows of urgent variable in nhamcsed1999 dataset :

immediacy with which |
   patient should be |
                seen |      Freq.     Percent        Cum.
---------------------+-----------------------------------
   Unknown/no triage |      3,033       30.33       30.33
Less than 15 minutes |      1,511       15.11       45.44
      15- 60 minutes |      2,995       29.95       75.39
   >1 hour - 2 hours |      1,644       16.44       91.83
 >2 hours - 24 hours |        817        8.17      100.00
---------------------+-----------------------------------
               Total |     10,000      100.00

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