Frequencies for chronicheartfailure variable in snp2010 dataset :

    Chronic |
      Heart |
    Failure |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,189       70.96       70.96
        Yes |      2,533       29.04      100.00
------------+-----------------------------------
      Total |      8,722      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016