Frequencies for first 10,000 rows of dose_freq variable in drug2017q2 dataset :

   Code for |
  Frequency |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,404       64.04       64.04
     /cycle |          8        0.08       64.12
     /month |         57        0.57       64.69
        /wk |        204        2.04       66.73
        /yr |          7        0.07       66.80
         1X |         15        0.15       66.95
        BID |        656        6.56       73.51
        BIW |         23        0.23       73.74
       Q12H |         14        0.14       73.88
        Q3W |        103        1.03       74.91
        Q4H |          2        0.02       74.93
        Q6H |          6        0.06       74.99
        Q8H |         10        0.10       75.09
         QD |      2,129       21.29       96.38
        QID |         49        0.49       96.87
        QOD |         13        0.13       97.00
        QOW |        105        1.05       98.05
        TID |        192        1.92       99.97
        TIW |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Feb 2018