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

   emt seen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,146       91.46       91.46
          1 |        854        8.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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