Summary statistics for primaryid variable in outc2013q4 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    154,697    9.86e+07    4.67e+07   3.68e+07   9.61e+08

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