Summary statistics for h4_2_hha1_c1_10 variable in prds_hosp10_yr2010 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- h4_2~1_c1_10 | 21 -2005.238 2037.193 -8215 -1 by Jean Roth , jroth@nber.org , 24 Aug 2018