Summary statistics for kneereplacementper1000medicareen variable in 2003_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |        307    7.200964    1.633502   2.682558   12.18841

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