Summary statistics for a_c6_61 variable in hosp_rollup2552_96_1999 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_61 | 4,282 -689653.5 1065165 -1.05e+07 1.12e+07 by Jean Roth , jroth@nber.org , 7 Sep 2018