Summary statistics for hipreplacementper1000medicareenr variable in 1993_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |        307    2.187269    .5877563   .6826006   3.750453

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