Summary statistics for primaryid variable in outc2018q4 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    299,135    1.70e+08    1.42e+08   3.67e+07   1.56e+09

by Jean Roth , jroth@nber.org , 7 Mar 2019