Summary statistics for backsurgeryper1000medicareenroll variable in 1997_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |         52    3.136047     .931464   1.742236   6.472502

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