Summary statistics for d_4_ipf_c13_71 variable in prds_hosp10_yr2010 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
d_4_ipf~3_71 |          1          20           .         20         20

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