Frequencies for first 10,000 rows of injdet variable in nhamcsopd2011 dataset :

                    Is visit related to |
       injury/poisoning/adverse effect? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
         Unintentional injury/poisoning |        865        8.65        8.65
           Intentional injury/poisoning |         34        0.34        8.99
      Injury/poisoning - unknown intent |        312        3.12       12.11
Adv effect of med/surg care/medicinal d |        123        1.23       13.34
                      None of the above |      8,666       86.66      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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