Frequencies for first 10,000 rows of injury variable in namcs2011 dataset :

   Is visit |
     injury |
   related? |
  (recoded) |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,125       91.25       91.25
        Yes |        875        8.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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