Summary statistics for d_4_hos_c6_50 variable in hosp_rollup2552_96_2009 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~6_50 | 310 4192770 4348090 1166 2.21e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018