Summary statistics for aorticmitralvalvereplacementper1 variable in 2009_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
aorticmitr~1 |        307    1.400945    .5048083      -2.02       2.49

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