Summary statistics for ther2017q3 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    443,236    1.64e+08    1.74e+08   3.77e+07   9.47e+09
      caseid |    443,236    1.35e+07    898920.5    3774935   1.41e+07
dsg_drug_seq |    443,236    6.156138    11.72824          1        232
    start_dt |    420,212    1.42e+07     9138166       1927   2.11e+07
start_dt_num |    420,212    20107.09    1576.442    -344378      53846
-------------+---------------------------------------------------------
      end_dt |    195,777    1.54e+07     8531812       1967   2.02e+07
  end_dt_num |    195,777     20422.2    1291.064    -345475      21516
         dur |        382    10.58704    49.94032          1        936
     dur_cod |          0

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