Frequencies for first 10,000 rows of leftama variable in nhamcsed2008 dataset :

   left ama |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,905       99.05       99.05
        yes |         95        0.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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