Summary statistics for drug2012q2 dataset :

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

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
   primaryid |         0
    drug_seq |         0
    role_cod |         0
    drugname |         0
     val_vbm |    822517    50.10902    31390.52          1   2.01e+07
-------------+--------------------------------------------------------
       route |         0
    dose_vbm |         0
      dechal |         0
      rechal |         0
     lot_num |         0
-------------+--------------------------------------------------------
      exp_dt |      5101    2.01e+07    243366.5   1.91e+07   3.74e+07
  exp_dt_num |      5101    19624.96    8890.033     -16884     650800
     nda_num |    218683     32028.3    35410.51          4     203923

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