Summary statistics for d_4_hos_c6_37 variable in hosp_rollup2552_96_2006 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~6_37 | 109 8.47e+07 1.10e+08 45488 5.05e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018