Summary statistics for cholecystectomyper1000medicareen variable in 1998_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |      1,254    4.779351    1.332089   1.778159   11.94081

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