Summary statistics for product dataset :

by Jean Roth , jroth@nber.org , 11 May 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      prodid |          0
         ndc |          0
    prodtype |          0
    propname |          0
     propsuf |          0
-------------+---------------------------------------------------------
   npropname |          0
    dosename |          0
   routename |          0
stmarkdate~r |          0
  stmarkdate |    120,718    17790.31    4410.602     -21914      21314
-------------+---------------------------------------------------------
endmarkdat~r |          0
 endmarkdate |      2,697    21886.44    7129.367      21315     391214
    markname |          0
      appnum |          0
   labelname |          0
-------------+---------------------------------------------------------
     subname |          0
   actnumstr |          0
  actingunit |          0
   pharmclas |          0
    deasched |          0
-------------+---------------------------------------------------------
ndc_exclud~g |          0
listing_re~r |          0
listing_re~t |    118,024    21525.74    216.5729      21184      21914

by Jean Roth , jroth@nber.org , 11 May 2018