Summary statistics for a_c1_4501 variable in prds_hosp10_yr2010 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c1_4501 | 3 1.38e+07 1.02e+07 2323030 2.19e+07 by Jean Roth , jroth@nber.org , 24 Aug 2018