Summary statistics for a_c2_5 variable in hosp_rollup2552_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_5 | 5,820 6080663 1.21e+07 -2.30e+07 2.45e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018