Summary statistics for cholecystectomyper1000medicareen variable in 2007_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |        307     3.85504    .8151162   1.862596   6.421995

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