Summary statistics for cholecystectomyper1000medicareen variable in 2003_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |        307    4.430002    .9400071    2.62188   7.986844

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