Summary statistics for d_4_irf_c2_200 variable in prds_hosp10_yr2010 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_irf_c2~0 | 39 378880.4 366474.3 9355 1352687 by Jean Roth , jroth@nber.org , 24 Aug 2018