Summary statistics for b_1_c18_22 variable in snf_rollup2540_96_2002 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_22 | 10,977 18804.79 45767.64 -23201 2808601 by Jean Roth , jroth@nber.org , 17 Feb 2018