Summary statistics for backsurgeryper1000medicareenroll variable in 2000_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |        968    3.631294     1.37699   .8773602   8.847071

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