Summary statistics for ther2014q3 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    271,119    1.08e+08    7.22e+07   3.79e+07   1.03e+09
      caseid |    271,119    1.02e+07      538040    3787745   1.07e+07
dsg_drug_seq |    271,119    4.432666    7.617438          1        143
    start_dt |    254,951    1.43e+07     9075523       1941   2.01e+07
start_dt_num |    254,951    18983.41    1499.708     -10145      20087
-------------+---------------------------------------------------------
      end_dt |    127,310    1.60e+07     8066188       1956   2.01e+07
  end_dt_num |    127,310    19420.13    876.3432      -1278      20084
         dur |      1,624     76.0093    659.9463        .02      22100
      durstr |          0
     dur_cod |          0

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