Summary statistics for a_c2_4 variable in prds_hosp10_yr2012 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_4 | 5,754 8905700 2.04e+07 -4.69e+07 4.86e+08 by Jean Roth , jroth@nber.org , 24 Aug 2018