Summary statistics for hipreplacementper1000medicareenr variable in 2010_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |      1,978    .2924924    4.431757     -14.12        8.8

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