Summary statistics for nadacc20160316 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
ndcdescrip~n |          0
         ndc |          0
oldnadacpe~t |          9    872.6329    2608.946    2.98429   7829.822
newnadacpe~t |          9    921.9902    2755.657    3.43774    8270.41
classifica~g |          0
-------------+---------------------------------------------------------
percentcha~e |          9    14.12778    3.186667       5.63      15.19
percentcha~r |          0
primaryrea~n |          0
   startdate |          0
     enddate |          0
-------------+---------------------------------------------------------
        year |          9        2016           0       2016       2016
       month |          9           3           0          3          3
         day |          9          16           0         16         16

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