Frequencies for first 10,000 rows of cancer variable in nhamcsopd2007 dataset :

       does |
patient now |
      have: |
     cancer |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,484       94.84       94.84
        yes |        516        5.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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