We use IDI index to compare logistic regression models including clinical variables and clinical + biomarkers variables. In most of the cases, the differences for the IDI index are significant but the IDI % is very small (meaning that not a big change is being done by the biomarker in the predictive model, so not clinically useful). 

Hope someone has an answer! Thank you

More Teresa García-Berrocoso's questions See All
Similar questions and discussions