Summary statistics for d_4_hos_c6_42 variable in hosp_rollup2552_96_2011 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~6_42 | 5 3899250 8497678 6996 1.91e+07 by Jean Roth , jroth@nber.org , 20 Jan 2017