Summary statistics for cholecystectomyper1000medicareen variable in 2006_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
cholecyste~n |        307    4.026571    .8830508   2.168365   7.167476

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