Summary statistics for backsurgeryper1000medicareenroll variable in 1998_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |        307    3.487391    1.116659   1.101376   7.882872

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