Summary statistics for hipreplacementper1000medicareenr variable in 2009_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |      1,975     .105276    4.415585     -12.84       7.68

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