Summary statistics for e4_c1_9 variable in prds_hosp10_yr2010 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     e4_c1_9 |        405    39.52652    41.06365        .01     228.16

by Jean Roth , jroth@nber.org , 24 Aug 2018