IDI and NRI measures of improvement for survival models
I want to use new measures for comparing two survival models, such as IDI (integrated discrimination improvement index) and NRI (net reclassification index). Are these available in SPSS Statistics?
Resolving the problem
IDI and NRI are not directly available in an SPSS Statistics procedure. An enhancement request has been filed with SPSS Development. An R package named survIDINRI exists that provides these measures, so it may be possible to produce such measures using the R plugin.