Summary statistics for d_4_hos_c8_42 variable in hosp_rollup2552_96_2009 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~8_42 | 129 3.75e+07 4.48e+07 692 2.50e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018