Summary statistics for b_1_c18_60 variable in snf_rollup2540_96_1996 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_60 | 412 223410.8 969324.2 -27306 1.05e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018