Summary statistics for kneereplacementper1000medicareen variable in 2009_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |      2,871    2.383396    9.786703     -35.79      19.94

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