Summary statistics for hipreplacementper1000medicareenr variable in 1998_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
hipreplace~r |        665    2.613711    .7432083   .6617174   4.999749

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