Frequencies for first 10,000 rows of injpoisadr2 variable in namcs2014 dataset 

                    Is visit related to |
  injury/poisoning/adverse effect? 2012 |
                 format, recoded versio |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                     Yes, injury/trauma |        851        8.51        8.51
                         Yes, poisoning |         17        0.17        8.68
Yes, adverse effect of medical treatmen |        125        1.25        9.93
                                    No' |      9,007       90.07      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017