Summary statistics for opdx0to992004_2014 dataset :

by Jean Roth , jroth@nber.org , 14 Mar 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     dgns_cd |          0
        year |    157,223        2009    3.162288       2004       2014
       label |          0
   pri_nrecs |    143,719    11004.42    107539.4          0    4654990
pri_nppl_any |    141,848    7000.851    62406.03          0    3733715
-------------+---------------------------------------------------------
   sec_nrecs |    142,747    18730.82    217040.6          0   1.83e+07
sec_nppl_any |    140,647     11736.3    115128.8          0    8863580

by Jean Roth , jroth@nber.org , 14 Mar 2018