Summary statistics for a_c1_30 variable in prds_hosp10_yr2015 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c1_30 | 6,119 1.03e+07 1.74e+07 977 3.42e+08 by Jean Roth , jroth@nber.org , 24 Aug 2018