Frequencies for first 10,000 rows of dur_cod variable in ther2010q3 dataset :

       Unit |
abbreviatio |
      n for |
duration of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,950       79.50       79.50
        DAY |      1,607       16.07       95.57
         HR |          3        0.03       95.60
        MIN |         10        0.10       95.70
        MON |        216        2.16       97.86
         WK |         44        0.44       98.30
         YR |        170        1.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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