Summary statistics for ther2014q1 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    330,603    1.02e+08    5.87e+07   3.72e+07   9.78e+08
      caseid |    330,603     9749881    468066.3    3721808   1.05e+07
dsg_drug_seq |    330,603    4.106575    8.088849          1        204
    start_dt |    314,437    1.40e+07     9204239       1930   2.01e+07
start_dt_num |    314,434    18834.05    2092.864    -347646      20080
-------------+---------------------------------------------------------
      end_dt |    146,382    1.55e+07     8413707       1969   2.01e+07
  end_dt_num |    146,382    19213.67    924.8355       1162      20088
         dur |      1,994    102.8623    709.8573          1      11315
      durstr |          0
     dur_cod |          0

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