Summary statistics for backsurgeryper1000medicareenroll variable in 2003_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
backsurger~l |      2,047    .1903431    4.860287  -17.14153   11.62632

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