Summary statistics for ther2011q1 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    286309     7302229     54993.9    7024584    7615688
dsg_drug_seq |    286309    1.02e+09    208093.1   1.01e+09   1.02e+09
    start_dt |    267555    2.01e+07    68073.77     120101   2.02e+07
start_dt_num |    267555     17648.5    1728.135    -346818      55098
      end_dt |    145639    2.01e+07    39313.81   1.01e+07   2.01e+07
-------------+--------------------------------------------------------
  end_dt_num |    145639    18046.66    1441.871    -346569      18954
         dur |     67131    153.6977     493.542          0      27375
     dur_cod |         0

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