Summary statistics for g2_c1_4 variable in prds_hosp10_yr2011 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- g2_c1_4 | 22 1.12e+07 1.03e+07 533250 4.40e+07 by Jean Roth , jroth@nber.org , 24 Aug 2018