Summary statistics for aorticmitralvalvereplacementper1 variable in 1998_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
aorticmitr~1 |        307    1.281645    .5461186  -1.438442   2.465483

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