Summary statistics for a_c2_18 variable in hosp_rollup2552_96_2003 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_18 | 3,120 106384.3 571729.2 -702003 1.79e+07 by Jean Roth , jroth@nber.org , 12 Sep 2018