Summary statistics for ther2018q2 dataset :

by Jean Roth , jroth@nber.org , 8 Sep 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    688,053    1.82e+08    1.97e+08   3.76e+07   1.49e+09
      caseid |    688,053    1.45e+07    959952.8    3757539   1.51e+07
dsg_drug_seq |    688,053    6.160841    10.73338          1        263
    start_dt |    656,551    1.36e+07     9401704       1900   2.11e+07
start_dt_num |    656,551    19899.95    2439.349    -345461      54131
-------------+---------------------------------------------------------
      end_dt |    353,829    1.34e+07     9485918       1974   2.21e+07
  end_dt_num |    353,829     20657.9    1419.249    -344394     348790
         dur |      1,025    14.28585    125.7439          1       2018
     dur_cod |          0

by Jean Roth , jroth@nber.org , 8 Sep 2018