Summary statistics for e_a_hos_c1_31 variable in prds_hosp10_yr2015 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- e_a_hos_c~31 | 3,134 .2389723 .1298275 .0006 1.2603 by Jean Roth , jroth@nber.org , 24 Aug 2018