Summary statistics for primaryid variable in ther2018q1 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    551,394    1.71e+08    1.75e+08   4.15e+07   1.44e+09

by Jean Roth , jroth@nber.org , 19 Jun 2018