Frequencies for first 10,000 rows of generic_drug_effec variable in nadac20170524 dataset :

Correspondi |
 ng Generic |
       Drug |
  Effective |
       Date |      Freq.     Percent        Cum.
------------+-----------------------------------
  18may2016 |          4        0.04        0.04
  22jun2016 |          1        0.01        0.05
  20jul2016 |          1        0.01        0.06
  17aug2016 |          1        0.01        0.07
  21sep2016 |          1        0.01        0.08
  19oct2016 |          1        0.01        0.09
  23nov2016 |          3        0.03        0.12
  21dec2016 |          7        0.07        0.19
  18jan2017 |          3        0.03        0.22
  08feb2017 |          1        0.01        0.23
  22feb2017 |          7        0.07        0.30
  22mar2017 |         11        0.11        0.41
  19apr2017 |         14        0.14        0.55
  17may2017 |        784        7.84        8.39
          . |      9,161       91.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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