Frequencies for first 10,000 rows of dur_cod variable in ther2012q2 dataset :

       Unit |
abbreviatio |
      n for |
duration of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,892       78.92       78.92
        DAY |      1,763       17.63       96.55
         HR |          3        0.03       96.58
        MIN |          5        0.05       96.63
        MON |        159        1.59       98.22
         WK |         37        0.37       98.59
         YR |        141        1.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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