Summary statistics for psych_unit_trmntn_dt variable in pos2013 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
psych_u~n_dt |        910    2.00e+07    73379.41   1.98e+07   2.01e+07

by Jean Roth , jroth@nber.org , 26 Jan 2016