Summary statistics for ther2004q3 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |     95638     4433010    25841.25    4334632    4527730
dsg_drug_seq |     95638    1.01e+09    95492.02   1.00e+09   1.01e+09
    start_dt |     86687    2.00e+07    93932.46   1.91e+07   3.01e+07
start_dt_num |     86687    15549.34    3439.043     -19994     381946
      end_dt |     53380    2.00e+07    115860.6   1.95e+07   3.20e+07
-------------+--------------------------------------------------------
  end_dt_num |     53380    15927.84     4233.39      -2556     453044
         dur |     18882    1620.427    8088.872          0      99360
     dur_cod |         0

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