Summary statistics for a8_c2_39 variable in hosp_rollup2552_96_2009 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a8_c2_39 | 5,077 -430967.9 2766905 -6.70e+07 2.54e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018