Summary statistics for a_c2_51 variable in hosp_rollup2552_96_1999 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_51 | 2,718 83254.43 551212.3 -514788 2.77e+07 by Jean Roth , jroth@nber.org , 7 Sep 2018