Frequencies for first 10,000 rows of cardmon variable in nhamcsed2014 dataset :

    Cardiac |
    monitor |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,267       92.67       92.67
        Yes |        733        7.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017