Summary statistics for indi2015q4 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    719,398    1.21e+08    7.11e+07   3.79e+07   1.18e+09
      caseid |    719,398    1.15e+07    570252.6    3790999   1.19e+07
indi_drug_~q |    719,398    4.486108    6.272498          1        195
     indi_pt |          0

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