Summary statistics for ther2017q2 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    456,863    1.58e+08    1.58e+08   3.89e+07   1.35e+09
      caseid |    456,863    1.32e+07    824616.1    3885345   1.37e+07
dsg_drug_seq |    456,863    6.414728    12.18195          1        203
    start_dt |    434,398    1.40e+07     9222129       1216   3.01e+07
start_dt_num |    434,397    19833.05    1950.033    -347155     385000
-------------+---------------------------------------------------------
      end_dt |    210,603    1.50e+07     8759100       1965   2.02e+07
  end_dt_num |    210,603    20085.52    1564.517    -344752      21180
         dur |        382    37.81021    343.7573          1       6205
     dur_cod |          0

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