Summary statistics for indi2012q4 dataset :

by Jean Roth , jroth@nber.org , 7 Apr 2017

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    445,200    9.03e+07    4.09e+07   3.61e+07   8.81e+08
      caseid |    445,200     8781163    302704.2    3605907    9319856
indi_drug_~q |    445,200    3.894641    7.421369          1        286
     indi_pt |          0

by Jean Roth , jroth@nber.org , 7 Apr 2017