Summary statistics for d4_hos_c2_42 variable in hosp_rollup2552_96_2002 dataset Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d4_hos_c2_42 | 1,007 464149.6 2114842 10 5.62e+07 by Jean Roth , jroth@nber.org , 10 Sep 2018