Summary statistics for primaryid variable in indi2017q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    844,994    1.47e+08    1.09e+08   3.77e+07   9.47e+09

by Jean Roth , jroth@nber.org , 8 Feb 2018