Frequencies for first 10,000 rows of intentr variable in namcs2004 dataset :

 intentionality of injury - based on |
                              e-code |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
Not applicable (not an injury visit) |      8,795       87.95       87.95
                       Unintentional |        693        6.93       94.88
                      Self-inflicted |          6        0.06       94.94
                             Assault |          6        0.06       95.00
                      Unknown intent |          2        0.02       95.02
              Adverse medical effect |        119        1.19       96.21
                         Blank cause |        379        3.79      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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