Summary statistics for percutaneouscoronaryintervention variable in 1999_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
percutaneo~n |         52    8.514744     1.93568   2.986442   13.70924

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