Summary statistics for a_c6_14 variable in hosp_rollup2552_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_14 | 1,916 -38303.42 441296.6 -1.54e+07 2069379 by Jean Roth , jroth@nber.org , 6 Sep 2018