Summary statistics for hipreplacementper1000medicareenr variable in 2007_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |      1,857   -.0540547    3.939201  -12.79811   7.910305

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