Summary statistics for ther2005q2 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    112334     4665171    25972.16    4548241    4754227
dsg_drug_seq |    112334    1.01e+09    107172.4   1.01e+09   1.01e+09
    start_dt |    102339    2.00e+07    100869.9   1.91e+07   4.00e+07
start_dt_num |    102339    15810.89    3688.521     -19964     746792
      end_dt |     65611    2.00e+07    118315.9   1.82e+07   4.20e+07
-------------+--------------------------------------------------------
  end_dt_num |     65611    16193.42     4320.58     -51067     818457
         dur |     25225    1565.919    8338.634          0      99360
     dur_cod |         0

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