Summary statistics for ther2005q1 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |     98881     4584916    24681.11    4467925    4700566
dsg_drug_seq |     98881    1.01e+09    88370.14   1.01e+09   1.01e+09
    start_dt |     89324    2.00e+07    265489.6   1.00e+07   9.02e+07
start_dt_num |     89324    15643.64    9701.709    -348811    2579685
      end_dt |     58576    2.00e+07    301414.7   1.91e+07   7.20e+07
-------------+--------------------------------------------------------
  end_dt_num |     58576    16102.18    11010.33     -20047    1913946
         dur |     24980    1341.926    7339.699        -16      99360
     dur_cod |         0

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