Frequencies for first 10,000 rows of wtreduc variable in nhamcsopd2003 dataset :

     weight |
  reduction |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,790       97.90       97.90
        yes |        210        2.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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