Summary statistics for cholecystectomyper1000medicareen variable in 1993_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |        307     5.31887    .9215012   3.447623   8.524485

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