Summary statistics for drug2009q3 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 |    536802    38.69369    27421.58          1   2.01e+07
-------------+--------------------------------------------------------
       route |         0
    dose_vbm |         0
      dechal |         0
      rechal |         0
     lot_num |         0
-------------+--------------------------------------------------------
      exp_dt |      3345    2.01e+07    37520.72   1.91e+07   2.11e+07
  exp_dt_num |      3345    18516.19    1366.233     -18142      54891
     nda_num |    117416    24541.53    13887.45        666      90514

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