Summary statistics for g_c1thru4_31 variable in prds_hosp10_yr2013 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- g_c1thru4_31 | 2,641 7.52e+07 2.96e+08 -1.38e+07 4.33e+09 by Jean Roth , jroth@nber.org , 24 Aug 2018