Summary statistics for backsurgeryper1000medicareenroll variable in 2007_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |        307    4.772377    1.482352   1.643449   9.300398

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