Summary statistics for backsurgeryper1000medicareenroll variable in 1994_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |         52     2.68254    .7486074   1.439306   5.150014

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