Summary statistics for d_4_hos_c12_60 variable in prds_hosp10_yr2014 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_ho~12_60 | 3,736 5848411 9688791 1 1.91e+08 by Jean Roth , jroth@nber.org , 24 Aug 2018