Summary statistics for c_1_c7_68 variable in hosp_rollup2552_96_2006 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- c_1_c7_68 | 80 3554286 1.18e+07 162 7.32e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018