Summary statistics for aorticmitralvalvereplacementper1 variable in 1997_surg_d

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
aorticmitr~1 |        296    1.363775    .3424299   .5946248    2.69598

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