Summary statistics for d_4_hos_c4_75 variable in prds_hosp10_yr2010 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
d_4_hos~4_75 |          1       31038           .      31038      31038

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