Frequencies for first 10,000 rows of dose_freq variable in drug2013q4 dataset :

   Code for |
  Frequency |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,211       72.11       72.11
        /hr |         17        0.17       72.28
     /month |         89        0.89       73.17
        /wk |        296        2.96       76.13
        /yr |          7        0.07       76.20
         1X |         11        0.11       76.31
        BID |        441        4.41       80.72
        BIW |          5        0.05       80.77
         HS |          1        0.01       80.78
       Q12H |         27        0.27       81.05
       Q24H |          1        0.01       81.06
        Q2H |          1        0.01       81.07
        Q3W |         43        0.43       81.50
        Q4H |         10        0.10       81.60
        Q5H |          2        0.02       81.62
        Q6H |         10        0.10       81.72
        Q8H |          3        0.03       81.75
         QD |      1,551       15.51       97.26
        QID |         40        0.40       97.66
         QM |          1        0.01       97.67
        QOD |         21        0.21       97.88
        QOW |         20        0.20       98.08
         QW |          5        0.05       98.13
        TID |        147        1.47       99.60
        TIW |         38        0.38       99.98
        UNK |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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