Frequencies for first 10,000 rows of injr1 variable in nhamcsopd2010 dataset :

    is this |
      visit |
 related to |
  an injury |
         or |
 poisoning? |
   (recoded |
version #1) |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,130       91.30       91.30
        yes |        870        8.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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