Summary statistics for primaryid variable in drug2016q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |  1,260,120    1.36e+08    1.02e+08   3.76e+07   1.26e+09

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