Summary statistics for ther2007q2 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    122195     5332028     27178.2    5198124    5478536
dsg_drug_seq |    122195    1.01e+09    99371.45   1.01e+09   1.01e+09
    start_dt |    112846    2.01e+07    33373.71   1.91e+07   2.01e+07
start_dt_num |    112846    16578.38    1229.345     -18776      17513
      end_dt |     70075    2.01e+07    19654.79   1.95e+07   2.01e+07
-------------+--------------------------------------------------------
  end_dt_num |     70075    16915.09    707.3419      -4748      17492
         dur |     25646    1780.229    8787.896          0      99360
     dur_cod |         0

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