Summary statistics for primaryid variable in drug2015q3 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |  1,296,349    1.19e+08    7.77e+07   3.65e+07   1.15e+09

by Jean Roth , jroth@nber.org , 19 Apr 2017