Summary statistics for d_4_hos_c6_40 variable in hosp_rollup2552_96_2010 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~6_40 | 163 7376250 1.11e+07 692 1.01e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018