Frequencies for first 10,000 rows of leftatri variable in nhamcsed2012 dataset :

 Left after |
     triage |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,849       98.49       98.49
        Yes |        151        1.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016