Summary statistics for nadac dataset :

by Jean Roth , jroth@nber.org , 1 Mar 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
ndcdescrip~n |          0
         ndc |          0
nadac_per_~t |  5,303,778    9.305582    192.3801     .00011   20016.17
effective_~e |  5,303,778    20449.87    453.7204      19410      21243
pricing_unit |          0
-------------+---------------------------------------------------------
pharmacy_t~r |          0
         otc |          0
explanatio~e |          0
classifica~g |          0
correspond~c |    292,734    3.774782    17.86977     .00276    413.988
-------------+---------------------------------------------------------
    asofdate |  5,303,778    20480.32    449.8543      19690      21243
        year |  5,303,778    2015.576    1.250836       2013       2018
       month |  5,303,778    6.476601     3.58109          1         12
         day |  5,303,778    15.76479    8.824216          1         31
generic_dr~e |          0
-------------+---------------------------------------------------------
generic_dr~c |    292,734    20422.42    445.9124      19564      21236

by Jean Roth , jroth@nber.org , 1 Mar 2018