Frequencies for first 10,000 rows of injpoisadr1 variable in nhamcsed2012 dataset :

  Is visit related to injury, poisoning |
or adverse effect of medical treatment? |
                                     -  |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  Blank |         42        0.42        0.42
                     Yes, injury/trauma |      2,632       26.32       26.74
                         Yes, poisoning |         89        0.89       27.63
Yes, adverse effect of medical treatmen |        147        1.47       29.10
No, visit is not related to injury, poi |      7,090       70.90      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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