Summary statistics for a_c6_71 variable in hosp_rollup2552_96_1999 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_71 | 1,350 24156.9 1023123 -4493200 2.90e+07 by Jean Roth , jroth@nber.org , 7 Sep 2018