Summary statistics for primaryid variable in outc2013q2 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    138,809    9.40e+07    3.90e+07   3.54e+07   9.23e+08

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