Summary statistics for hipreplacementper1000medicareenr variable in 1992_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |        307    2.205781    .5929214   .7489924   3.975287

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