Frequencies for first 10,000 rows of firearm variable in nhamcsed1996 dataset :

   did a firearm produce the injury? |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
Not applicable (not an injury visit) |      6,250       62.50       62.50
                                 Yes |         20        0.20       62.70
                                  No |      3,730       37.30      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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