Frequencies for first 10,000 rows of dose_freq variable in drug2013q2 dataset :

   Code for |
  Frequency |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,982       69.82       69.82
     /cycle |          1        0.01       69.83
        /hr |          4        0.04       69.87
     /month |        201        2.01       71.88
        /wk |        272        2.72       74.60
        /yr |          3        0.03       74.63
         1X |         22        0.22       74.85
        BID |        499        4.99       79.84
        BIW |         16        0.16       80.00
       Q12H |          8        0.08       80.08
        Q3H |          1        0.01       80.09
        Q3W |         29        0.29       80.38
        Q4H |          3        0.03       80.41
        Q6H |          2        0.02       80.43
        Q8H |          4        0.04       80.47
         QD |      1,601       16.01       96.48
         QH |          1        0.01       96.49
        QID |         50        0.50       96.99
         QM |         11        0.11       97.10
        QOD |         28        0.28       97.38
        QOW |         61        0.61       97.99
         QW |          4        0.04       98.03
        TID |        164        1.64       99.67
        TIW |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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