Summary statistics for cholecystectomyper1000medicareen variable in 2004_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |      2,239   -.0917021    5.056508  -13.85598   10.53947

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