Summary statistics for a7_3_c9_2 variable in hosp_rollup2552_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a7_3_c9_2 | 3,388 285356.1 943226 -1.29e+07 1.49e+07 by Jean Roth , jroth@nber.org , 6 Sep 2018