Summary statistics for d_4_hos_c8_56 variable in hosp_rollup2552_96_2004 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~8_56 | 87 4105335 4877043 45917 2.97e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018