Summary statistics for a_c6_8 variable in hosp_rollup2552_96_1996 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_8 | 2,990 -38290.54 673413.6 -1.90e+07 1.07e+07 by Jean Roth , jroth@nber.org , 3 Sep 2018