Frequencies for first 10,000 rows of injpoisadr1 variable in nhamcsed2013 dataset :

  Is visit related to injury, poisoning |
or adverse effect of medical treatment? |
                                     -  |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  Blank |         32        0.32        0.32
                     Yes, injury/trauma |      2,497       24.97       25.29
                         Yes, poisoning |         80        0.80       26.09
Yes, adverse effect of medical treatmen |        162        1.62       27.71
No, visit is not related to injury, poi |      7,229       72.29      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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