Summary statistics for a_c6_60 variable in hosp_rollup2552_96_2007 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_60 | 2,141 -2097315 7110499 -1.24e+08 3.27e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018