Summary statistics for backsurgeryper1000medicareenroll variable in 1994_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |        730    2.623405    1.032926   .5854205   7.500026

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