Summary statistics for b_1_c18_3550 variable in snf_rollup2540_96_2001 dataset 

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
b_1_c18_3550 |          1      415286           .     415286     415286

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