Summary statistics for primaryid variable in indi2015q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    812,561    1.17e+08    6.61e+07   3.65e+07   1.15e+09

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