Frequencies for first 10,000 rows of dose_freq variable in drug2014q3 dataset :

   Code for |
  Frequency |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,340       73.40       73.40
     /cycle |          6        0.06       73.46
        /hr |          1        0.01       73.47
       /min |          1        0.01       73.48
     /month |         68        0.68       74.16
        /wk |        193        1.93       76.09
        /yr |         14        0.14       76.23
         1X |         32        0.32       76.55
        BID |        532        5.32       81.87
        BIW |         13        0.13       82.00
       Q12H |        128        1.28       83.28
        Q2H |          1        0.01       83.29
        Q3H |          1        0.01       83.30
        Q3W |         22        0.22       83.52
        Q4H |          8        0.08       83.60
        Q6H |         15        0.15       83.75
        Q8H |         54        0.54       84.29
         QD |      1,359       13.59       97.88
        QID |         22        0.22       98.10
        QOD |         11        0.11       98.21
        QOW |         34        0.34       98.55
        TID |        109        1.09       99.64
        TIW |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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