Summary statistics for a7_3_c9_1 variable in hosp_rollup2552_96_2001 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a7_3_c9_1 | 2,938 1085693 2688477 -1.29e+07 5.26e+07 by Jean Roth , jroth@nber.org , 9 Sep 2018