Frequencies for first 10,000 rows of intentr variable in nhamcsed2000 dataset :

  intentionality of injury - recoded |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
Not applicable (not an injury visit) |      6,369       63.69       63.69
                       Unintentional |      2,635       26.35       90.04
                      Self-inflicted |         48        0.48       90.52
                             Assault |        220        2.20       92.72
                  Legal intervention |          5        0.05       92.77
                      Unknown intent |         22        0.22       92.99
              Adverse medical effect |        113        1.13       94.12
                         Blank cause |        588        5.88      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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