Summary statistics for a_c6_55 variable in hosp_rollup2552_96_1997 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_55 | 1,485 -25774.64 561918.8 -1.46e+07 9565471 by Jean Roth , jroth@nber.org , 5 Sep 2018