Summary statistics for c_1_c6_39 variable in hosp_rollup2552_96_2007 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- c_1_c6_39 | 3,121 6293594 1.17e+07 1 1.84e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018