Summary statistics for a_c6_56 variable in hosp_rollup2552_96_2009 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_56 | 1,846 -163007.7 1810850 -3.70e+07 2.53e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018