Summary statistics for a7_3_c11_4 variable in hosp_rollup2552_96_2009 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a7_3_c11_4 | 1,935 389168.5 1034606 -4949406 1.68e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018