Frequencies for first 10,000 rows of hgba variable in namcs2007 dataset :

     hgba1c |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,621       96.21       96.21
        yes |        379        3.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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