Frequencies for first 10,000 rows of hgba variable in nhamcsed2004 dataset :

     hgba1c |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,533       95.33       95.33
        yes |        467        4.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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