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NOS-TLPlot: A Specialized Python Tool for Visualizing Newcastle–Ottawa Scale Risk-of-Bias Assessments Cover

NOS-TLPlot: A Specialized Python Tool for Visualizing Newcastle–Ottawa Scale Risk-of-Bias Assessments

By: Vihaan Sahu  
Open Access
|Feb 2026

Abstract

NOS-TLPlot is a specialized Python tool for visualizing Newcastle–Ottawa Scale (NOS) risk-of-bias assessments. It converts raw NOS star ratings into standardized risk categories and generates twelve distinct visualization types, including star distribution plots, traffic-light plots, radar charts, heatmaps, dot profiles, donut charts, and lollipop charts. The tool offers both an interactive web application and a command-line interface for batch processing and integration into reproducible analytical pipelines. Users can customize output themes, figure sizes, and export formats. NOS-TLPlot enhances the transparency, consistency, and efficiency of reporting study quality in systematic reviews and meta-analyses involving non-randomized studies.

DOI: https://doi.org/10.5334/jors.635 | Journal eISSN: 2049-9647
Language: English
Submitted on: Oct 24, 2025
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Accepted on: Jan 13, 2026
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Published on: Feb 10, 2026
Published by: Ubiquity Press
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2026 Vihaan Sahu, published by Ubiquity Press
This work is licensed under the Creative Commons Attribution 4.0 License.