For researchers and clinicians assessing a candidate biomarker, get help interpreting pasted study results and comparing assays or cohorts. Calculate sensitivity, specificity, predictive values, and confidence intervals from numbers you enter; examine how prevalence and cutoff choices affect performance. Leave with a results summary, comparison table, or list of study limitations to consider before your next research or clinical discussion.
Biomarkers
Interpret biomarker study results and compare diagnostic performance across cohorts.
Use Biomarkers
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What it writes
- Diagnostic performance calculation table
- Side-by-side study comparison
- Biomarker results and limitations summary
How to use it
Include the cohort size, reference standard, cutoff, and true-positive, false-positive, true-negative, and false-negative counts. If you have only published metrics, paste the study population and prevalence too.
What you bring
- Study design and cohort size
- Test results or performance metrics
- Biomarker cutoff and target condition
- Have the study numbers ready to paste
A good fit for
- Comparing sensitivity and specificity across two diagnostic biomarker studies
- Checking how a cutoff changes test performance in your cohort
- Summarizing limitations in a candidate biomarker paper for lab meeting
Ways to start
A few requests this Agent can handle.
In 200 patients, my assay found 72 true positives, 18 false negatives, 90 true negatives, and 20 false positives. Calculate sensitivity, specificity, and predictive values.
Compare these AUCs from two cohorts: 0.81 in 240 patients and 0.74 in 180 patients. What can I conclude, and what information is missing?
Our biomarker cutoff is 5.2 ng/mL. Sensitivity is 88% and specificity is 61%. Explain the tradeoff for screening a disease with 4% prevalence.
Good to know
This workspace provides text assistance.
- Diagnosing or selecting treatment for an individual patient
- Medical decisions require qualified clinical review
- Calculations depend on accurate numbers entered in chat
- Cannot access papers, databases, or patient records
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Can I use the response in my work?
Use it as a draft to review and adapt. Verify calculations, facts, rights, and suitability before relying on it. Do not provide information you do not have permission to share.
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