Frequencies for first 10,000 rows of emt variable in nhamcsed1997 dataset :

  emergency |
    medical |
 technician |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,451       94.51       94.51
          1 |        549        5.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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