Summary statistics for d4_snf_c2_56 variable in hosp_rollup2552_96_2007 dataset Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d4_snf_c2_56 | 1,191 791396.2 1175375 4 1.21e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018