Summary statistics for a_c6_8 variable in hosp_rollup2552_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_8 | 3,326 -57938.08 957298.7 -1.67e+07 1.83e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018