Frequencies for first 10,000 rows of dur_cod variable in ther2006q1 dataset :

       Unit |
abbreviatio |
      n for |
duration of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,258       72.58       72.58
        DAY |      1,802       18.02       90.60
         HR |         24        0.24       90.84
        MIN |        162        1.62       92.46
        MON |        367        3.67       96.13
         WK |         85        0.85       96.98
         YR |        302        3.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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