Frequencies for first 10,000 rows of cast variable in nhamcsopd2009 dataset :

       cast |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,957       99.57       99.57
        yes |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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