Summary statistics for a_c6_23 variable in hosp_rollup2552_96_2008 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_23 | 672 -995992.1 9357807 -7.82e+07 7.79e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018