Summary statistics for ther2011q4 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    323319     7911704    69125.88    7597741    8233208
dsg_drug_seq |    323319    1.02e+09    221850.6   1.02e+09   1.02e+09
    start_dt |    304320    2.01e+07    70959.65    2010101   2.01e+07
start_dt_num |    304318    17923.79    1590.821    -277024      19331
      end_dt |    154073    2.01e+07    24211.91   1.91e+07   2.01e+07
-------------+--------------------------------------------------------
  end_dt_num |    154073    18394.71    904.5514     -17897      18992
         dur |     65626     186.893    574.3818          0      22425
     dur_cod |         0

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