Summary statistics for a_c6_31 variable in prds_hosp10_yr2012 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_31 | 1,467 -335496.2 1074730 -1.62e+07 1.60e+07 by Jean Roth , jroth@nber.org , 24 Aug 2018