Summary statistics for kneereplacementper1000medicareen variable in 2003_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |         52    7.159877     1.65161   2.682558   10.75138

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