Summary statistics for d_4_irf_c13_57 variable in prds_hosp10_yr2010 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
d_4_irf~3_57 |          1          18           .         18         18

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