Summary statistics for c_1_c7_37 variable in hosp_rollup2552_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- c_1_c7_37 | 4,876 5431809 8956262 10 3.22e+08 by Jean Roth , jroth@nber.org , 6 Sep 2018