Summary statistics for kneereplacementper1000medicareen variable in 1996_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |         52    5.370571    1.297749   1.950409   8.687924

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