Summary statistics for a_c6_12 variable in hosp_rollup2552_96_2006 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_12 | 2,235 -561160.9 889958.4 -1.06e+07 1843246 by Jean Roth , jroth@nber.org , 21 Apr 2018