Summary statistics for backsurgeryper1000medicareenroll variable in 1998_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |         52    3.432152    1.007821   1.789818   6.774959

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