Summary statistics for cholecystectomyper1000medicareen variable in 2004_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |         52    4.123229    .7132209   2.609771     5.6097

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