Summary statistics for ther2012q1 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    352335     8141118    73153.67    7805388    8406255
dsg_drug_seq |    352335    1.02e+09    272334.1   1.02e+09   1.02e+09
    start_dt |    328600    2.01e+07    61862.91    2011104   2.21e+07
start_dt_num |    328600    18043.25     1589.79    -278314      90727
      end_dt |    170217    2.01e+07    24615.32   1.96e+07   2.01e+07
-------------+--------------------------------------------------------
  end_dt_num |    170217    18481.17    904.0488       1096      19358
         dur |     68869     182.548    646.7055          0      48667
     dur_cod |         0

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