Summary statistics for d_4_hos_c3_88 variable in prds_hosp10_yr2015 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
d_4_ho~c3_88 |          1      200128           .     200128     200128

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