Summary statistics for d_4_irf_c4_200 variable in prds_hosp10_yr2014 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_irf_c4~0 | 3 216606.7 193959.4 21442 409338 by Jean Roth , jroth@nber.org , 24 Aug 2018