Frequencies for first 10,000 rows of dose_amt_mult variable in drug2013q1 dataset :

   Multiple |
  DOSE_AMTs |
or DOSE_AMT |
seems to be |
    a range |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,998       99.98       99.98
          1 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2017