Summary statistics for d4_hos_c2_30 variable in hosp_rollup2552_96_2010 dataset Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d4_hos_c2_30 | 55 1.24e+07 3.07e+07 1438 1.78e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018