Summary statistics for a_c6_90 variable in prds_hosp10_yr2012 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_90 | 2,412 -3397650 1.17e+07 -2.59e+08 2.27e+07 by Jean Roth , jroth@nber.org , 24 Aug 2018