Summary statistics for reac2013q4 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    691,468    1.08e+08    8.99e+07   3.68e+07   9.61e+08
      caseid |    691,468     9480264    536884.1    3681487   1.03e+07
          pt |          0

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