Frequencies for first 10,000 rows of injury variable in namcs1995 dataset :

   is visit |
 related to |
  injury or |
 poisoning? |      Freq.     Percent        Cum.
------------+-----------------------------------
        Yes |      1,193       11.93       11.93
         No |      8,807       88.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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