Restricted Cubic Spline (RCS) — free, runs in your browser
Model the non-linear relationship between a continuous variable and an outcome with restricted cubic splines: a smooth OR/HR curve (with 95% band) and a… 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
When should I use Restricted Cubic Spline?
Model the non-linear relationship between a continuous variable and an outcome with restricted cubic splines: a smooth OR/HR curve (with 95% band) and a non-linearity test, for Logistic and Cox, with covariate adjustment, plus one-click R (rms) co…
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 Restricted Cubic Spline now
Model the non-linear relationship between a continuous variable and an outcome with restricted cubic splines: a smooth OR/HR curve (with 95% band) and a… Computed in your browser — no data uploaded.
Open free tool →Free to use. No account required. No data uploaded.