ABSTRACT
FIGURE 7.12: ROC curves at time t = 4 and three options for t under the composite prediction rule assuming 20% decrease in prothrombin levels between visits (based on the joint model tted to the Liver Cirrhosis dataset).
A comparison between Figure 7.11 and Figure 7.13 shows that the timevarying ROCs curves under the two rules are almost identical suggesting that in this particular example we do not gain much by considering the composite prediction rule.
