Frequencies for first 10,000 rows of dur variable in ther2013q1 dataset :

   (Mostly) |
    Numeric |
   value of |
        the |
   duration |
(length) of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         16        0.16        0.16
        1.5 |          1        0.01        0.17
          2 |          2        0.02        0.19
          3 |          1        0.01        0.20
          4 |         15        0.15        0.35
          5 |          8        0.08        0.43
          7 |          2        0.02        0.45
          8 |          3        0.03        0.48
          9 |          1        0.01        0.49
         10 |          5        0.05        0.54
         12 |          3        0.03        0.57
         15 |          1        0.01        0.58
         17 |          1        0.01        0.59
         24 |          1        0.01        0.60
         25 |          1        0.01        0.61
         27 |          1        0.01        0.62
         31 |          2        0.02        0.64
         33 |          1        0.01        0.65
         34 |          4        0.04        0.69
         42 |          3        0.03        0.72
         49 |          1        0.01        0.73
         52 |          1        0.01        0.74
         60 |          1        0.01        0.75
         96 |          1        0.01        0.76
        351 |          1        0.01        0.77
        891 |          1        0.01        0.78
          . |      9,922       99.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Apr 2017