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

         Is visit related to any of the |
                             following? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  Blank |        460        4.60        4.60
                                Unknown |        270        2.70        7.30
          Intentionality does not apply |        336        3.36       10.66
         Unintentional injury/poisoning |      2,102       21.02       31.68
           Intentional injury/poisoning |        174        1.74       33.42
Injury/poisoning of undetermined intent |        183        1.83       35.25
    Adverse effect of medical treatment |        204        2.04       37.29
Visit is not related to injury/poisonin |      6,251       62.51       99.80
             Questionable injury status |         20        0.20      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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