Risk of bias assessment with traffic light plots

Assess your studies with RoB 2, ROBINS-I, NOS, JBI, or AXIS, then export the traffic light and summary figures, without leaving the browser or writing R.

Assess your studies Free core tools. Runs in your browser, nothing to install.

Five instruments, one workspace

Pick the instrument, judge each domain for each study, and record your supporting text as you go. Your judgements save with the project, next to the screening decisions and extracted data they came from.

The figures journals expect

Covexe generates the two standard risk-of-bias figures: the traffic light plot (every study by every domain) and the weighted summary bar chart, in the publication style journals are used to seeing from robvis. Export them for your manuscript when the assessment is done.

AI drafts, you judge

For judgement-based instruments (RoB 2, ROBINS-I, JBI, AXIS), an AI assistant can read the study and draft a per-domain judgement with a supporting quote. Drafts are visibly marked as drafts, and nothing becomes final until you accept, edit, or discard it. The judgement stays yours, which is exactly what your methods section claims.

If you only need the figure

robvis is an excellent R package, and if your assessments are already finished in a spreadsheet, it will draw them well. Covexe covers the step before the figure too: the assessment itself, with the instrument built in, no R required, and the figure drawn from your live judgements.

Frequently asked questions

Which risk of bias tools are supported?

RoB 2 for randomized trials, ROBINS-I for non-randomized studies, the Newcastle-Ottawa Scale, JBI checklists, and AXIS for cross-sectional studies.

Can AI fill in the assessment?

AI can draft per-domain judgements with a supporting quote from the study. Drafts are visibly marked and nothing becomes final until you accept, edit, or discard it.

Is this a robvis alternative?

If you only need the figure from finished assessments, robvis is an excellent R package. Covexe hosts the assessment itself as well and draws the traffic light and summary figures from your live judgements, no R required.

Is it free?

The assessment tools and figures are free. The optional AI drafting is metered on the free tier, or you can bring your own API key.