Summary statistics for a_c6_63 variable in hosp_rollup2552_96_2010 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_63 | 342 -2507244 2.15e+07 -3.75e+08 314937 by Jean Roth , jroth@nber.org , 21 Apr 2018