Frequencies for first 10,000 rows of intentr variable in nhamcsed2003 dataset :

               intentionality recode |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
not applicable (not an injury visit) |      6,414       64.14       64.14
                       unintentional |      2,438       24.38       88.52
                      self-inflicted |         40        0.40       88.92
                             assault |        137        1.37       90.29
                  legal intervention |          5        0.05       90.34
                      unknown intent |         29        0.29       90.63
              adverse medical effect |        148        1.48       92.11
                         blank cause |        789        7.89      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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