Summary statistics for cholecystectomyper1000medicareen variable in 1997_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |         52    4.782918    .6577239   3.430775   6.618659

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