Frequencies for first 10,000 rows of dose_freq variable in drug2013q3 dataset :

   Code for |
  Frequency |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,959       69.59       69.59
     /cycle |          5        0.05       69.64
        /hr |          2        0.02       69.66
     /month |        179        1.79       71.45
        /wk |        279        2.79       74.24
        /yr |          1        0.01       74.25
         1X |         18        0.18       74.43
        BID |        594        5.94       80.37
        BIW |         16        0.16       80.53
        PRN |          1        0.01       80.54
       Q12H |         39        0.39       80.93
        Q3W |         74        0.74       81.67
        Q4H |          7        0.07       81.74
        Q6H |          4        0.04       81.78
        Q8H |          6        0.06       81.84
         QD |      1,463       14.63       96.47
        QID |         43        0.43       96.90
        QOD |         15        0.15       97.05
        QOW |         58        0.58       97.63
         QW |          3        0.03       97.66
        TID |        184        1.84       99.50
        TIW |         49        0.49       99.99
     UID/QD |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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