Frequencies for classification variable in enfrep20130417 dataset :

Classificat |
        ion |      Freq.     Percent        Cum.
------------+-----------------------------------
    Class I |          7        6.25        6.25
   Class II |         74       66.07       72.32
  Class III |         31       27.68      100.00
------------+-----------------------------------
      Total |        112      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015