Summary statistics for a_c6_50 variable in snf_rollup2540_96_2007 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c6_50 |          1      -11414           .     -11414     -11414

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