Summary statistics for kneereplacementper1000medicareen variable in 2004_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |        307    8.107477    1.810311   2.517985   14.37211

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