Summary statistics for indi2015q2 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    660,263    1.16e+08    7.24e+07   3.64e+07   1.11e+09
      caseid |    660,263    1.09e+07    500093.7    3635791   1.13e+07
indi_drug_~q |    660,263    4.311838    6.267176          1        220
     indi_pt |          0

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