Summary statistics for percutaneouscoronaryintervention variable in 1999_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
percutaneo~n |      1,854    8.814958    3.513771   1.781376   42.51257

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