Summary statistics for indi2018q1 dataset :

by Jean Roth , jroth@nber.org , 19 Jun 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |  1,253,118    1.53e+08    1.06e+08   4.12e+07   1.44e+09
      caseid |  1,253,118    1.43e+07    724025.8    4123915   1.48e+07
indi_drug_~q |  1,253,118    6.392966    8.005642          1        291
     indi_pt |          0

by Jean Roth , jroth@nber.org , 19 Jun 2018