Summary statistics for kneereplacementper1000medicareen variable in 2004_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |         52    8.009178     1.86269   2.517985   12.50842

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