Summary statistics for primaryid variable in rpsr2015q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |     12,082    1.14e+08    2.22e+07   6.00e+07   1.09e+09

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