Summary statistics for kneereplacementper1000medicareen variable in 2000_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |      1,367    5.376444    1.594536   1.087024   12.96573

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