Summary statistics for c_1_c7_37 variable in hosp_rollup2552_96_2009 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- c_1_c7_37 | 4,918 2.91e+07 6.05e+07 31 9.26e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018