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

  Skin exam |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,667       86.67       86.67
        Yes |      1,333       13.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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