Summary statistics for ther2016q1 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    460,110    1.30e+08    1.02e+08   3.35e+07   1.19e+09
      caseid |    460,110    1.18e+07    679984.8    3353858   1.22e+07
dsg_drug_seq |    460,110    4.535585    7.848773          1        148
    start_dt |    437,802    1.40e+07     9234088       1908   2.11e+07
start_dt_num |    437,802    19632.84    1392.999     -21914      53301
-------------+---------------------------------------------------------
      end_dt |    195,677    1.54e+07     8486776       1954   2.02e+07
  end_dt_num |    195,677    19981.07    870.0698      -4826      20805
         dur |        743    20.81696    269.9601          1       7300
     dur_cod |          0

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