Summary statistics for ther2015q2 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    374,412    1.24e+08    1.11e+08   3.64e+07   1.11e+09
      caseid |    374,412    1.08e+07    603704.9    3635791   1.13e+07
dsg_drug_seq |    374,412    4.822981    8.793789          1        221
    start_dt |    355,910    1.36e+07     9380086       1098   2.02e+07
start_dt_num |    355,910    19224.41    2090.227    -346084      20422
-------------+---------------------------------------------------------
      end_dt |    156,318    1.55e+07     8423593       1960   2.02e+07
  end_dt_num |    156,318    19688.62     869.143      -7338      20424
         dur |      1,449    34.80773     198.162         .5       3650
      durstr |          0
     dur_cod |          0

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