Summary statistics for nadacc20170614 dataset :

by Jean Roth , jroth@nber.org , 10 Feb 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
ndcdescrip~n |          0
         ndc |          0
oldnadacpe~t |         84    21.68985    47.77359    1.08894   287.4567
newnadacpe~t |         84    22.98709    50.96079    1.14626   307.5873
classifica~g |          0
-------------+---------------------------------------------------------
percentcha~e |         84    5.385833    1.358122        .79        9.9
percentcha~r |          0
primaryrea~n |          0
   startdate |         84       20977           0      20977      20977
     enddate |         84       20984           0      20984      20984
-------------+---------------------------------------------------------
effectived~e |         84    20977.52    2.050426      20972      20984
        year |         84        2017           0       2017       2017
       month |         84           6           0          6          6
         day |         84          14           0         14         14

by Jean Roth , jroth@nber.org , 10 Feb 2018