Summary statistics for kneereplacementper1000medicareen variable in 2002_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |         52    6.534022    1.431671   2.130206   9.672047

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