Frequencies for first 10,000 rows of dur variable in ther2013q2 dataset :

   (Mostly) |
    Numeric |
   value of |
        the |
   duration |
(length) of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          8        0.08        0.08
          2 |          1        0.01        0.09
          3 |          2        0.02        0.11
          5 |          4        0.04        0.15
          7 |          1        0.01        0.16
         15 |          1        0.01        0.17
         17 |          1        0.01        0.18
         29 |          1        0.01        0.19
         33 |          3        0.03        0.22
         34 |          1        0.01        0.23
         42 |          2        0.02        0.25
         86 |          1        0.01        0.26
        111 |          1        0.01        0.27
        230 |          1        0.01        0.28
        250 |          1        0.01        0.29
        275 |          1        0.01        0.30
        349 |          1        0.01        0.31
        633 |          1        0.01        0.32
        732 |          1        0.01        0.33
       1019 |          1        0.01        0.34
       1077 |          1        0.01        0.35
       1350 |          1        0.01        0.36
          . |      9,964       99.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Apr 2017