Summary statistics for a_c2_5 variable in prds_hosp10_yr2012 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_5 | 6,123 1.96e+07 4.06e+07 -1.50e+07 8.48e+08 by Jean Roth , jroth@nber.org , 24 Aug 2018