Summary statistics for ther2013q3 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    251,855    9.89e+07    6.46e+07   3.44e+07   9.38e+08
      caseid |    251,855     9301448    393365.4    3443231   1.01e+07
dsg_drug_seq |    251,855    4.360342    7.589772          1        186
    start_dt |    238,126    1.49e+07     8793634        112   2.01e+07
start_dt_num |    238,113    18655.35     2447.01    -346206     384705
-------------+---------------------------------------------------------
      end_dt |    115,571    1.62e+07     7936689       1950   2.01e+07
  end_dt_num |    115,570    19094.73    1636.742    -343040     309543
         dur |      1,704    32.49674    179.2869          1       3793
      durstr |          0
     dur_cod |          0

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