Summary statistics for aorticmitralvalvereplacementper1 variable in 1999_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
aorticmitr~1 |        307    1.428758    .3812067   .5476459   2.970854

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