Summary statistics for a_c6_8 variable in hosp_rollup2552_96_1997 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_8 | 3,135 -35961.05 618933.4 -1.36e+07 1.46e+07 by Jean Roth , jroth@nber.org , 5 Sep 2018