Summary statistics for ther2008q2 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    155853     5741928     31691.1    5579951    5895293
dsg_drug_seq |    155853    1.01e+09    118156.5   1.01e+09   1.01e+09
    start_dt |    142705    2.01e+07    52431.51   1.01e+07   2.01e+07
start_dt_num |    142705    16856.72    1921.247    -347956      17869
      end_dt |     86116    2.01e+07    22004.89   1.95e+07   2.01e+07
-------------+--------------------------------------------------------
  end_dt_num |     86116    17252.51     793.016      -3652      17937
         dur |     30489    794.3591    5483.959          0      97920
     dur_cod |         0

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