Frequencies for chronicheartfailure variable in snp2014 dataset :

    Chronic |
      Heart |
    Failure |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,020       99.74       99.74
          * |         21        0.26      100.00
------------+-----------------------------------
      Total |      8,041      100.00

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