Summary statistics for kneereplacementper1000medicareen variable in 1994_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |        307    4.757201    1.221811   1.668679   9.213743

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