Frequencies for first 10,000 rows of leftama variable in nhamcsed2013 dataset :

   Left AMA |
   (against |
    medical |
    advice) |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,860       98.60       98.60
        Yes |        140        1.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016