Summary statistics for a_c6_50 variable in snf_rollup2540_96_2004 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c6_50 |          1      -13956           .     -13956     -13956

by Jean Roth , jroth@nber.org , 17 Feb 2018