Frequencies for first 10,000 rows of intentr variable in namcs2000 dataset :

   intentionality of injury - recode |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
Not applicable (not an injury visit) |      9,001       90.01       90.01
                       Unintentional |        533        5.33       95.34
                             Assault |         10        0.10       95.44
              Adverse medical effect |         78        0.78       96.22
                         Blank cause |        378        3.78      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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