Summary statistics for drug2011q3 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 |    753957     27.8358    23160.14          1   2.01e+07
-------------+--------------------------------------------------------
       route |         0
    dose_vbm |         0
      dechal |         0
      rechal |         0
     lot_num |         0
-------------+--------------------------------------------------------
      exp_dt |      3247    2.01e+07    20657.47   2.00e+07   2.10e+07
  exp_dt_num |      3247    19310.59    747.4908      13817      52380
     nda_num |    193711    27929.25    21477.55        123     202652

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