Summary statistics for primaryid variable in outc2014q4 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    167,522    1.08e+08    5.54e+07   3.13e+07   1.05e+09

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