Summary statistics for a_c6_31 variable in prds_hosp10_yr2011 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_31 | 1,423 -313818.9 994425.3 -1.04e+07 1.26e+07 by Jean Roth , jroth@nber.org , 24 Aug 2018