Summary statistics for hipreplacementper1000medicareenr variable in 2004_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |      1,932   -.0530028    3.932135  -14.74922   6.985908

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