Summary statistics for ther2017q1 dataset :

by Jean Roth , jroth@nber.org , 18 Sep 2017

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    458,302    1.54e+08    1.52e+08   3.96e+07   1.33e+09
      caseid |    458,302    1.29e+07    826247.4    3961598   1.34e+07
dsg_drug_seq |    458,302    5.869392    11.02788          1        231
    start_dt |    435,086    1.43e+07     9087155       1937   2.11e+07
start_dt_num |    435,086    19959.32    1417.403     -21914      53587
-------------+---------------------------------------------------------
      end_dt |    199,851    1.55e+07     8475692       1900   2.02e+07
  end_dt_num |    199,851    20297.63    931.7233     -21732      21002
         dur |        317    21.84148    177.3766          1       2920
     dur_cod |          0

by Jean Roth , jroth@nber.org , 18 Sep 2017