Summary statistics for ther2009q3 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    220481     6318207    38335.38    6142610    6453317
dsg_drug_seq |    220481    1.01e+09      157784   1.01e+09   1.01e+09
    start_dt |    207724    2.01e+07     66467.2    2061009   2.01e+07
start_dt_num |    207723    17006.68     1967.56    -347956      18235
      end_dt |    103235    2.01e+07    28189.19   1.97e+07   2.21e+07
-------------+--------------------------------------------------------
  end_dt_num |    103235    17533.25    1041.011       2557      91002
         dur |     45851    149.5396     638.261          0      73063
     dur_cod |         0

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