Summary statistics for a_c1_97 variable in hosp_rollup2552_96_2008 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c1_97 | 454 5640646 2.37e+07 -3817569 2.53e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018