Summary statistics for d_4_hos_c6_63 variable in hosp_rollup2552_96_2001 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~6_63 | 4 5338.5 5098.295 1395 12252 by Jean Roth , jroth@nber.org , 9 Sep 2018