Frequencies for first 10,000 rows of injdet variable in nhamcsopd2007 dataset :

                    is visit related to |
       injury/poisoning/adverse effect? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  blank |          9        0.09        0.09
         unintentional injury/poisoning |      1,111       11.11       11.20
           intentional injury/poisoning |         64        0.64       11.84
      injury/poisoning - unknown intent |        349        3.49       15.33
adv effect of med/surg care/medicinal d |        167        1.67       17.00
                      none of the above |      8,300       83.00      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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