Summary statistics for primaryid variable in outc2013q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    147,712    9.70e+07    4.77e+07   3.44e+07   9.38e+08

by Jean Roth , jroth@nber.org , 6 Apr 2017