Summary statistics for cstratm variable in nhamcsed2012 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     cstratm |     29,453    2.63e+07    1.25e+07   1.01e+07   4.04e+07

by Jean Roth , jroth@nber.org , 7 Nov 2016