Summary statistics for a8_c2_47 variable in hosp_rollup2552_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a8_c2_47 | 3,347 -149572.9 1833463 -6.60e+07 1.84e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018