Summary statistics for cholecystectomyper1000medicareen variable in 2001_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |        307    4.890645    1.093686   2.634272   9.476006

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