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NOS-TLPlot

NOS-TLPlot is an open-source Python tool that visualises Newcastle–Ottawa Scale (NOS) risk-of-bias assessments for systematic reviews and meta-analyses, turning star ratings into traffic-light plots, heatmaps, radar charts and other summary figures.

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NOS-TLPlot screenshot

What it does

Converts NOS star ratings into standard risk-of-bias categories
12 visualisation types (traffic-light, heatmap, radar, lollipop and more)
Export to PNG, PDF, SVG and EPS
Streamlit web app and command-line interface
Batch processing and customisable themes
Open source

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