Frequencies for producttype variable in enfrep20170517 dataset :

    Product |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
  Biologics |          8       10.39       10.39
    Devices |         29       37.66       48.05
      Drugs |          9       11.69       59.74
       Food |         31       40.26      100.00
------------+-----------------------------------
      Total |         77      100.00

by Jean Roth , jroth@nber.org , 18 May 2017