Summary statistics for a8_c2_12 variable in hosp_rollup2552_96_2009 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a8_c2_12 | 5,941 -4336762 1.19e+07 -3.34e+08 -1 by Jean Roth , jroth@nber.org , 21 Apr 2018