Summary statistics for primaryid variable in outc2017q1 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    242,686    1.40e+08    9.47e+07   3.88e+07   1.33e+09

by Jean Roth , jroth@nber.org , 18 Sep 2017