Please click here to obtain permission to reproduce this image.
Click on image to view larger version.

Figure 2 Tree diagram illustrating the mortality risk for octogenarians stratified according to the independent predictors defined from the multivariable model. Patients are included into only one risk group in a hierarchical manner (considering the presence of each risk factor in descending order of predictive importance). The observed mortality and corresponding 95% CIs are presented at the bottom.
|