Summary statistics for a7_3_c9_2 variable in hosp_rollup2552_96_1996 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a7_3_c9_2 | 3,714 512459.4 1015020 -7911211 1.47e+07 by Jean Roth , jroth@nber.org , 3 Sep 2018