Summary statistics for d_4_irf_c11_9201 variable in prds_hosp10_yr2012 dataset 

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
~rf_c11_9201 |          4       52.75     59.1009          3        136

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