Summary statistics for c_1_c7_67 variable in hosp_rollup2552_96_2008 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- c_1_c7_67 | 65 3164084 1.06e+07 555 7.90e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018