Summary statistics for cola_acrdtd_y_match_dt variable in posclia2012 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cola_acrdt~t |      6,634    2.00e+07    69745.43   1.99e+07   2.01e+07

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