Summary statistics for ther2018q1 dataset :

by Jean Roth , jroth@nber.org , 19 Jun 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    551,394    1.71e+08    1.75e+08   4.15e+07   1.44e+09
      caseid |    551,394    1.41e+07    932432.8    4151224   1.48e+07
dsg_drug_seq |    551,394    5.947669    10.76827          1        211
    start_dt |    523,572    1.46e+07     8965650       1914   2.02e+07
start_dt_num |    523,572    20231.21    1493.502     -21914      21367
-------------+---------------------------------------------------------
      end_dt |    255,617    1.56e+07     8392646       1966   2.02e+07
  end_dt_num |    255,617    20535.43     1018.86       -906      21367
         dur |        415    9.595181    14.71279          1        149
     dur_cod |          0

by Jean Roth , jroth@nber.org , 19 Jun 2018