Frequencies for first 10,000 rows of cardenz variable in nhamcsed2011 dataset :

    Cardiac |
    enzymes |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,220       82.20       82.20
        Yes |      1,780       17.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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