Summary statistics for a_c2_5 variable in hosp_rollup2552_96_2007 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_5 | 5,870 7367245 1.51e+07 -2.44e+07 3.18e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018