Frequencies for first 10,000 rows of injdet variable in nhamcsopd2009 dataset :

                    is visit related to |
       injury/poisoning/adverse effect? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  blank |         72        0.72        0.72
         unintentional injury/poisoning |        695        6.95        7.67
           intentional injury/poisoning |         43        0.43        8.10
      injury/poisoning - unknown intent |        333        3.33       11.43
adv effect of med/surg care/medicinal d |        124        1.24       12.67
                      none of the above |      8,733       87.33      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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