Frequencies for first 10,000 rows of durstr variable in ther2015q3 dataset :

   (Mostly) |
    Numeric |
   value of |
        the |
   duration |
(length) of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,998       99.98       99.98
         20 |          1        0.01       99.99
       2920 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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