Summary statistics for backsurgeryper1000medicareenroll variable in 1992_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |         52    2.584288     .697997   1.155504   4.438553

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