Summary statistics for ther2012q3 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    217679     8552992    42550.61    8480347    8626056
dsg_drug_seq |    217679    1.02e+09    159092.7   1.02e+09   1.02e+09
    start_dt |    203609    2.01e+07    41575.11   1.90e+07   2.09e+07
start_dt_num |    203609    18243.29    1532.003     -21914      46752
      end_dt |    102740    2.01e+07    23654.41   1.92e+07   2.01e+07
-------------+--------------------------------------------------------
  end_dt_num |    102740    18721.96    864.9491     -13308      19304
         dur |     44945    235.4555    721.4709          0      18250
     dur_cod |         0

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