Summary statistics for primaryid variable in outc2015q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    213,307    1.18e+08    7.13e+07   3.65e+07   1.12e+09

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