Frequencies for first 10,000 rows of otc variable in nadac20170816 dataset :

Over-the-co |
unter (OTC) |
    Product |
    ('Y' or |
       'N') |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      8,772       87.72       87.72
          Y |      1,228       12.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Feb 2018