Summary statistics for d_4_hos_c2_98 variable in prds_hosp10_yr2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
d_4_ho~c2_98 |          1       20933           .      20933      20933

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