Summary statistics for a8_c2_16 variable in hosp_rollup2552_96_2005 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a8_c2_16 | 4,389 -327410 631122.4 -1.28e+07 1756844 by Jean Roth , jroth@nber.org , 21 Apr 2018