Frequencies for first 10,000 rows of dose_freq variable in drug2016q1 dataset :

   Code for |
  Frequency |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,199       61.99       61.99
     /cycle |          3        0.03       62.02
       /min |          7        0.07       62.09
     /month |         56        0.56       62.65
        /wk |        213        2.13       64.78
        /yr |          3        0.03       64.81
         1X |         30        0.30       65.11
        BID |        585        5.85       70.96
        BIW |         35        0.35       71.31
       Q12H |          4        0.04       71.35
        Q2H |          1        0.01       71.36
        Q3W |         41        0.41       71.77
        Q4H |          8        0.08       71.85
        Q5H |          1        0.01       71.86
        Q6H |          5        0.05       71.91
         QD |      2,522       25.22       97.13
        QID |         44        0.44       97.57
        QOD |         15        0.15       97.72
        QOW |         46        0.46       98.18
        TID |        170        1.70       99.88
        TIW |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Apr 2017