Frequencies for first 10,000 rows of urgent variable in nhamcsed1998 dataset :

immediacy with which |
   patient should be |
                seen |      Freq.     Percent        Cum.
---------------------+-----------------------------------
   Unknown/no triage |      2,539       25.39       25.39
Less than 15 minutes |      1,584       15.84       41.23
      15- 60 minutes |      3,348       33.48       74.71
   >1 hour - 2 hours |      1,685       16.85       91.56
 >2 hours - 24 hours |        844        8.44      100.00
---------------------+-----------------------------------
               Total |     10,000      100.00

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