Frequencies for first 10,000 rows of dur_cod variable in ther2012q1 dataset :

       Unit |
abbreviatio |
      n for |
duration of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,776       77.76       77.76
        DAY |      1,956       19.56       97.32
         HR |          4        0.04       97.36
        MIN |          5        0.05       97.41
        MON |        113        1.13       98.54
         WK |         47        0.47       99.01
         YR |         99        0.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015