Summary statistics for a8_c2_30 variable in hosp_rollup2552_96_2001 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a8_c2_30 | 453 -671751.5 1601122 -9668606 1.15e+07 by Jean Roth , jroth@nber.org , 9 Sep 2018