Summary statistics for b_1_c27_28 variable in hosp_rollup2552_96_2000 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c27_28 | 96 3304878 2584210 -499841 1.69e+07 by Jean Roth , jroth@nber.org , 8 Sep 2018