Summary statistics for kneereplacementper1000medicareen variable in 2008_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |      2,838    2.440997    9.491687      -31.3      17.64

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