NRI / IDI Reclassification — free, runs in your browser
Incremental value of a new vs old prediction model: net reclassification improvement (NRI, continuous and categorical) and integrated discrimination imp… Computed in your browser — no data uploaded.
Open free tool →Runs in your browser
No software installation. Paste your data and get results instantly.
Publication-ready output
Export charts as SVG vector or HD/UHD PNG suitable for journal submission.
Data stays local
Nothing is uploaded. Your patient data never leaves your device.
Common questions
What are the limitations of NRI?
NRI has been criticised: it is insensitive to calibration, continuous NRI tends to be large, and it can show improvement even for uninformative markers, so it should not be the sole evidence of added value (Kerr et al., Epidemiology 2014, PMID 24240655).
What are the original references?
Pencina MJ, et al. Stat Med 2008;27:157-72. PMID 17569110; Pencina MJ, et al. Stat Med 2011;30:11-21. PMID 21204120; Kerr KF, et al. Epidemiology 2014;25:114-21. PMID 24240655.
When should I use NRI?
Incremental value of a new vs old prediction model: net reclassification improvement (NRI, continuous and categorical) and integrated discrimination improvement (IDI). When adding a new marker barely raises AUC, these quantify the reclassification…
Is my data safe?
All calculations run entirely in your browser. No data is sent to any server. You can even use the tool offline after the page loads.
Run NRI now
Incremental value of a new vs old prediction model: net reclassification improvement (NRI, continuous and categorical) and integrated discrimination imp… Computed in your browser — no data uploaded.
Open free tool →Free to use. No account required. No data uploaded.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.