Summary statistics for a7_3_c9_4 variable in hosp_rollup2552_96_2005 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a7_3_c9_4 | 5,371 2664321 5085760 -8163998 9.71e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018