Summary statistics for a7_3_c15_4 variable in hosp_rollup2552_96_1997 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a7_3_c15_4 | 5,645 1631361 2694455 -1655374 3.86e+07 by Jean Roth , jroth@nber.org , 5 Sep 2018