Summary statistics for kneereplacementper1000medicareen variable in 2002_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |      1,582    6.361464    1.822462   .7921776   15.55476

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