Summary statistics for hipreplacementper1000medicareenr variable in 1997_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |        307    2.525628    .6591298   .8654878   4.536308

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