Frequencies for first 10,000 rows of intentr variable in nhamcsopd2000 dataset :

   intentionality of injury - recode |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
Not applicable (not an injury visit) |      9,005       90.05       90.05
                       Unintentional |        566        5.66       95.71
                      Self-inflicted |          2        0.02       95.73
                             Assault |         28        0.28       96.01
                  Legal intervention |          1        0.01       96.02
                      Unknown intent |          1        0.01       96.03
              Adverse medical effect |         44        0.44       96.47
                         Blank cause |        353        3.53      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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