Summary statistics for a_c2_4 variable in prds_hosp10_yr2015 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_4 | 5,785 9086954 2.26e+07 -3.92e+07 5.95e+08 by Jean Roth , jroth@nber.org , 24 Aug 2018