Frequencies for first 10,000 rows of intentr variable in namcs2002 dataset :

 Intentionality of Injury - based on |
                              E-code |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
Not applicable (not an injury visit) |      8,739       87.39       87.39
                       Unintentional |        735        7.35       94.74
                      Self-inflicted |          3        0.03       94.77
                             Assault |          5        0.05       94.82
                      Unknown intent |          1        0.01       94.83
              Adverse medical effect |         65        0.65       95.48
                         Blank cause |        452        4.52      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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