Frequencies for first 10,000 rows of dose_freq variable in drug2014q2 dataset :

   Code for |
  Frequency |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,743       67.43       67.43
        /hr |          1        0.01       67.44
     /month |         48        0.48       67.92
        /wk |        304        3.04       70.96
        /yr |         54        0.54       71.50
         1X |          6        0.06       71.56
        BID |        539        5.39       76.95
        BIW |          6        0.06       77.01
         HS |          1        0.01       77.02
       Q12H |         10        0.10       77.12
        Q3W |         13        0.13       77.25
        Q4H |          4        0.04       77.29
        Q5H |          1        0.01       77.30
        Q6H |         11        0.11       77.41
        Q8H |          9        0.09       77.50
         QD |      1,978       19.78       97.28
        QID |         45        0.45       97.73
         QM |          1        0.01       97.74
        QOD |         23        0.23       97.97
        QOW |         43        0.43       98.40
         QW |          3        0.03       98.43
        TID |        122        1.22       99.65
        TIW |         35        0.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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