Summary statistics for a_c2_3 variable in hosp_rollup2552_96_2009 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_3 | 4,881 3727790 8051248 -2.05e+07 1.56e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018