Summary statistics for a8_c2_29 variable in hosp_rollup2552_96_2005 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a8_c2_29 | 257 -977329.2 3749960 -4.05e+07 5676933 by Jean Roth , jroth@nber.org , 21 Apr 2018