Frequencies for first 10,000 rows of dur_cod variable in ther2006q4 dataset :

       Unit |
abbreviatio |
      n for |
duration of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,543       75.43       75.43
        DAY |      1,648       16.48       91.91
         HR |         18        0.18       92.09
        MIN |        381        3.81       95.90
        MON |        190        1.90       97.80
         WK |         84        0.84       98.64
         YR |        136        1.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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