Summary statistics for cholecystectomyper1000medicareen variable in 2008_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |      1,994   -.3389519    4.328347     -13.04       7.86

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