Summary statistics for ther2011q2 dataset :

by Jean Roth , jroth@nber.org , 18 Dec 2015

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |    332980     7488576    57522.06    7215577    7692852
dsg_drug_seq |    332980    1.02e+09    221720.4   1.02e+09   1.02e+09
    start_dt |    311629    2.01e+07    67695.56    1000610   2.02e+07
start_dt_num |    311628    17557.48    2142.748    -348321      21841
      end_dt |    168575    2.01e+07    29863.05   1.96e+07   2.01e+07
-------------+--------------------------------------------------------
  end_dt_num |    168575    18020.93    1083.788       -730      18992
         dur |     79467    164.3422    523.3598          0      52181
     dur_cod |         0

by Jean Roth , jroth@nber.org , 18 Dec 2015