Summary statistics for d_4_hos_c6_56 variable in hosp_rollup2552_96_2007 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~6_56 | 188 2.49e+07 2.36e+07 462 1.56e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018