Frequencies for first 10,000 rows of dur_cod variable in ther2010q4 dataset :

       Unit |
abbreviatio |
      n for |
duration of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,902       79.02       79.02
        DAY |      1,688       16.88       95.90
         HR |          2        0.02       95.92
        MIN |          8        0.08       96.00
        MON |        197        1.97       97.97
         WK |         49        0.49       98.46
         YR |        154        1.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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