Summary statistics for hipreplacementper1000medicareenr variable in 1999_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |        665    2.611689    .7416619   .7189206   5.168426

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