Summary statistics for backsurgeryper1000medicareenroll variable in 2007_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |      2,183    .1992261     5.40252  -22.64379   12.91683

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