Frequencies for first 10,000 rows of emt variable in nhamcsed2010 dataset :

        emt |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,170       91.70       91.70
        yes |        830        8.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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