Frequencies for first 10,000 rows of cholest variable in namcs2009 dataset :

lipids/chol |
    esterol |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      8,769       87.69       87.69
        yes |      1,231       12.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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