Summary statistics for ther2010q4 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    264128     7112998    54542.59    6816342    7301355
dsg_drug_seq |    264128    1.02e+09    191046.2   1.01e+09   1.02e+09
    start_dt |    246583    2.01e+07    43109.97   1.01e+07   2.09e+07
start_dt_num |    246583    17624.58    1598.293    -346699      46904
      end_dt |    128376    2.01e+07    62282.02      91013   2.01e+07
-------------+--------------------------------------------------------
  end_dt_num |    128375    18022.68    1028.433     -21914      18840
         dur |     56585    139.0183     464.513        -30      12995
     dur_cod |         0

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