Summary statistics for backsurgeryper1000medicareenroll variable in 2004_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |         52    4.417416    1.336697   1.660298   8.942638

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