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

     weight |
  reduction |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,722       97.22       97.22
        yes |        278        2.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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