Summary statistics for a_c6_50 variable in snf_rollup2540_96_2010 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c6_50 |          1       -8109           .      -8109      -8109

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