Summary statistics for e_a_hos_c2_3501 variable in prds_hosp10_yr2013 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- e_a_hos_c2~1 | 2,378 .0133218 .5143866 1.00e-09 25 by Jean Roth , jroth@nber.org , 24 Aug 2018