Summary statistics for a_c6_61 variable in hosp_rollup2552_96_1997 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_61 | 4,349 -640742.3 940135.9 -1.20e+07 9264721 by Jean Roth , jroth@nber.org , 5 Sep 2018