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

lipids/chol |
    esterol |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,401       94.01       94.01
        yes |        599        5.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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