Summary statistics for percutaneouscoronaryintervention variable in 1998_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
percutaneo~n |        307     8.63231    2.897821   3.574587   23.75981

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