Summary statistics for backsurgeryper1000medicareenroll variable in 2004_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |        307    4.507422    1.488586   1.660298   10.34793

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