Summary statistics for d_4_hos_c1_61 variable in hosp_rollup2552_96_2000 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos_c1~1 | 2 21105.5 9972.327 14054 28157 by Jean Roth , jroth@nber.org , 8 Sep 2018