Summary statistics for kneereplacementper1000medicareen variable in 1998_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
kneereplac~n |      1,321    5.201451    1.567514   1.165659   13.85619

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