Summary statistics for d_4_hos_c6_42 variable in hosp_rollup2552_96_2009 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~6_42 | 130 3035915 4177749 8780 2.55e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018