Summary statistics for backsurgeryper1000medicareenroll variable in 2001_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |        307    4.171189    1.364573   1.405597    9.39467

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