Frequencies for first 10,000 rows of injpoisad variable in namcs2012 dataset :

                    Is visit related to |
  injury/poisoning/adverse effect? 2012 |
                                 format |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  Blank |         68        0.68        0.68
                                Unknown |        314        3.14        3.82
                     Yes, injury/trauma |        932        9.32       13.14
                         Yes, poisoning |          9        0.09       13.23
Yes, adverse effect of medical treatmen |        108        1.08       14.31
                                     No |      8,569       85.69      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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