Summary statistics for a7_3_c9_3 variable in hosp_rollup2552_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a7_3_c9_3 | 3,754 1838820 4040807 -7123703 5.61e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018