Summary statistics for a_c6_97 variable in hosp_rollup2552_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_97 | 138 1796027 1.41e+07 -2.30e+07 1.48e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018