Summary statistics for cholecystectomyper1000medicareen variable in 2006_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |      2,135   -.2014287    4.709671  -14.15333   8.974641

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