Frequencies for first 10,000 rows of leftama variable in nhamcsed2009 dataset :

   left ama |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,913       99.13       99.13
          1 |         87        0.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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