Summary statistics for a_c6_56 variable in hosp_rollup2552_96_1997 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_56 | 1,775 -82659.14 920417.3 -2.39e+07 1.14e+07 by Jean Roth , jroth@nber.org , 5 Sep 2018