Frequencies for first 10,000 rows of cholest variable in nhamcsopd2005 dataset :

lipids/chol |
    esterol |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,333       93.33       93.33
        yes |        667        6.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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