Summary statistics for ther2014q2 dataset :

by Jean Roth , jroth@nber.org , 6 Apr 2017

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    267,491    1.08e+08    8.34e+07   3.31e+07   1.00e+09
      caseid |    267,491     9917840    535127.3    3308501   1.06e+07
dsg_drug_seq |    267,491    4.887981    10.63508          1        304
    start_dt |    253,104    1.46e+07     8959265       1930   2.01e+07
start_dt_num |    253,104    18884.49    1959.058    -345511      20088
-------------+---------------------------------------------------------
      end_dt |    125,449    1.63e+07     7877759       1958   2.01e+07
  end_dt_num |    125,449    19309.07    943.3745       -548      20437
         dur |      1,598    44.28173    296.5108         .1       6570
      durstr |          0
     dur_cod |          0

by Jean Roth , jroth@nber.org , 6 Apr 2017