Frequencies for first 10,000 rows of intent variable in nhamcsed2013 dataset :

  Is this injury/poisoning |
              intentional? |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
                     Blank |      7,665       76.65       76.65
                   Unknown |         39        0.39       77.04
       Yes, self-inflicted |         34        0.34       77.38
              Yes, assault |        139        1.39       78.77
         No, unintentional |      2,103       21.03       99.80
Questionable injury status |         20        0.20      100.00
---------------------------+-----------------------------------
                     Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016