Summary statistics for a_c2_5 variable in hosp_rollup2552_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_5 | 5,770 3575604 7146089 -1.09e+07 1.52e+08 by Jean Roth , jroth@nber.org , 6 Sep 2018