Summary statistics for ther2015q1 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    375,340    1.14e+08    8.23e+07   3.50e+07   1.07e+09
      caseid |    375,340    1.06e+07    513932.6    3503293   1.10e+07
dsg_drug_seq |    375,340    4.334377    8.427817          1        192
    start_dt |    356,705    1.38e+07     9306972        199   2.10e+07
start_dt_num |    356,701    19236.73    1589.991    -346260      52944
-------------+---------------------------------------------------------
      end_dt |    161,139    1.52e+07     8610070       1960   2.10e+07
  end_dt_num |    161,138    19618.27    1240.109    -345108      52933
         dur |      1,542    53.72894    386.7505         .5       6205
      durstr |          0
     dur_cod |          0

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