Frequencies for first 10,000 rows of dose_freq variable in drug2018q2 dataset :

   Code for |
  Frequency |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,129       61.29       61.29
     /cycle |         20        0.20       61.49
        /hr |          2        0.02       61.51
     /month |        258        2.58       64.09
        /wk |        213        2.13       66.22
        /yr |          7        0.07       66.29
         1X |         22        0.22       66.51
        BID |        583        5.83       72.34
        BIW |         37        0.37       72.71
       Q12H |         32        0.32       73.03
        Q3W |         98        0.98       74.01
        Q4H |          8        0.08       74.09
        Q5H |          1        0.01       74.10
        Q6H |         13        0.13       74.23
        Q8H |         17        0.17       74.40
         QD |      2,222       22.22       96.62
        QID |         50        0.50       97.12
        QOD |         25        0.25       97.37
        QOW |         93        0.93       98.30
        TID |        142        1.42       99.72
        TIW |         28        0.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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