Summary statistics for hipreplacementper1000medicareenr variable in 2001_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |         52    3.087643    .7441624   .8185207   4.669857

by Jean Roth , jroth@nber.org , 14 Mar 2018