Frequencies for first 10,000 rows of intentr variable in nhamcsed2009 dataset :

intentional |
     ity of |
     injury |
   based on |
     e-code |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |        604        6.04        6.04
         -7 |      6,658       66.58       72.62
          1 |      2,354       23.54       96.16
          2 |         54        0.54       96.70
          3 |        153        1.53       98.23
          4 |          3        0.03       98.26
          5 |         42        0.42       98.68
          6 |        132        1.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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