Summary statistics for a_c2_1 variable in hosp_rollup2552_96_2007 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_1 | 765 4465571 1.23e+07 -1.63e+07 2.65e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018