Frequencies for producttype variable in enfrep20130417 dataset :

    Product |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
  Biologics |         50       44.64       44.64
    Devices |         38       33.93       78.57
      Drugs |          4        3.57       82.14
       Food |         20       17.86      100.00
------------+-----------------------------------
      Total |        112      100.00

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