Summary statistics for e_a_hos_c2_3501 variable in prds_hosp10_yr2014 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- e_a_hos_c2~1 | 2,668 .0002947 .0006821 1.00e-09 .0212601 by Jean Roth , jroth@nber.org , 24 Aug 2018